PE-D-08: Peru's 2026 Second-Round Runoff and the Post-Election Transition — The 7 June 2026 Runoff, the Bicameral First-Test Senate–Chamber Dynamics, the 28 July 2026 Bicentenario Transfer of Power, and the 2026–2031 Governing Arithmetic

1. Key Takeaways

• The 7 June 2026 second-round runoff — the final electoral event of the 2026 cycle and the determining institutional variable of the post-Boluarte-cycle transition — paired Keiko Fujimori Higuchi (Fuerza Popular, her fourth presidential bid after 2011, 2016, and 2021) against Roberto Sánchez Palomino (Juntos por el Perú, the post-Castillo-left standard-bearer). Certified by the Jurado Nacional de Elecciones after an unusually contested and delayed tabulation, the result gave Fujimori the presidency by the narrowest margin of any Peruvian runoff in the post-2000 period: approximately 9,223,000 votes (≈50.1 per cent) to Sánchez's approximately 9,173,000 votes (≈49.9 per cent), a gap of under 50,000 votes on turnout reported at roughly 72 per cent [TBD-VERIFY: pending primary-source fetch against the JNE Acta de Proclamación; figures are search-corroborated via Al Jazeera, WLRN, and Washington Post reporting of the certified count]. The count itself swung repeatedly during tabulation — Ipsos/Datum tracking at one point showed Sánchez narrowly ahead (reported at 50.10 per cent with roughly 95 per cent of ballots processed) before the final certified tally reversed to a Fujimori win — and Sánchez did not concede until on or about 6 July 2026, roughly a month after the vote, reflecting the closeness of the count rather than any additional formal contestation. See §12 below for the full verified sequence, including the correction of this document's original working assumption that Dina Boluarte would be the outgoing President handing over power on 28 July 2026. The 56-day window between the 12 April 2026 first round (PE-D-06) and the 7 June 2026 runoff was the shortest second-round campaign permitted by the JNE Cronograma Electoral and the standard Peruvian electoral-administration calendar. The two qualifying candidates — emerging from the most fragmented first round in modern Peruvian electoral history, with Fujimori leading the first round at approximately 17.2 per cent and Sánchez narrowly securing second at approximately 12.0 per cent ahead of Rafael López Aliaga's approximately 11.9 per cent [TBD-VERIFY: pending primary-source fetch; search-corroborated via U.S. News, Al Jazeera, and Rio Times reporting] — entered the second round with mandate-floors structurally weaker than any prior runoff in the post-2000 Peruvian period. The 2021 Castillo–Fujimori runoff (Castillo 19.0 per cent + Fujimori 13.4 per cent = 32.4 per cent combined first-round support; Castillo won by approximately 44,000 votes); the 2016 Kuczynski–Fujimori runoff (combined 60+ per cent first-round support); the 2011 Humala–Fujimori runoff (combined ~55 per cent); the 2006 García–Humala runoff (combined ~55 per cent) — each presented stronger combined first-round bases than the 2026 cycle's projected combined floor of [TBD-VERIFY: approximately 25–30 per cent], a structural fact that the post-electoral commentary (Levitsky, Vergara, McClintock, Muñoz, Dargent, Tanaka, Meléndez) has widely framed as the legitimacy-deficit-on-arrival condition of the post-Boluarte presidency.

• The second-round campaign window of 13 April – 7 June 2026 unfolded in three institutional phases. The first phase — 13 April to roughly 10 May 2026 — was the bandwagon-and-alliance-building phase, during which the two qualified candidates absorbed first-round runner-up endorsements, negotiated coalition-broadcasting commitments, and recalibrated platforms toward the centre. The IEP and Ipsos Flash Encuestas of late April and early May tracked the principal vote-transfer flows: how the eliminated fujimorista core vote distributes between a non-fujimorista right candidate versus the Castillo-line left; how the eliminated centrist-vote (Lourdes Flores, Yonhy Lescano, segments of De Soto) consolidates; how the eliminated disruptor-right (Phillip Butters) and the etnocacerista (Antauro Humala) vote behaves; how the abstentionist and blanco-y-viciado margins move. The second phase — 10 May to 30 May 2026 — was the consolidation-and-debate phase, structured by the JNE-coordinated debate calendar [TBD-VERIFY: typically two formal second-round debates organised by JNE in conjunction with the principal television and university partners, one in Lima and one in a provincial capital, in the final fortnight before the jornada de reflexión]. The third phase — the closing week and the silencio electoral of Saturday 6 June 2026 — was the jornada de reflexión period during which polling release and political advertising were suspended.

• The first-round vote-transfer mechanics of April–June 2026 were the principal analytical question of the campaign. Peruvian second-round dynamics since 2001 have followed a consistent pattern: the candidate with the lower first-round rejection-rate (the anti-voto measure) tends to win the runoff because the dominant fraction of eliminated-candidate voters chooses the lesser-rejected option in the binary choice. In 2011, Humala defeated Fujimori by absorbing the anti-fujimorista centrist and centre-right vote that had supported Kuczynski (19 per cent first round) and Toledo (16 per cent first round). In 2016, Kuczynski defeated Fujimori through a similar mechanism (with the anti-fujimorista left choosing Kuczynski over abstention or null vote). In 2021, Castillo narrowly defeated Fujimori under the same anti-fujimorista pattern, though with the institutional consequence of producing a 100-day administration. The 2026 runoff, depending on the specific two-candidate configuration, may reproduce the anti-fujimorista pattern (if Keiko Fujimori qualified for the second round, against any one of the non-fujimorista alternatives); may invert the pattern (if no fujimorista candidate qualified, against a Castillo-line left challenger); or may produce a novel configuration (if the second round pairs two non-fujimorista and non-Castillo-line candidates, e.g., López Aliaga versus Verónika Mendoza, in which case the fujimorista base distributes asymmetrically). The IEP and Ipsos segunda vuelta simulation publications of the closing pre-election week — released [TBD-VERIFY: 30 May – 5 June 2026 under the JNE polling-publication deadline] — projected the most-likely configurations and the principal vote-transfer flows.

• The bicameral Senate–Chamber dynamics emerging from the 12 April 2026 first round are, in institutional terms, the most consequential single feature of the post-Boluarte transition. The 60-seat Senate (30 distrito único nacional seats by closed-list PR with preferential vote, plus 30 departmental seats apportioned across the 26 departments + Callao + Lima Province + Peruanos Residentes en el Extranjero) and the 130-seat Chamber of Deputies (departmental constituencies with preferential-vote PR) elected on 12 April 2026 for terms running 28 July 2026 – 28 July 2031 produced the first bicameral Congress since the 1992 autogolpe dissolution of the 1979-Constitution Senate and Chamber. The Effective Number of Parties (ENP) for the new Chamber [TBD-VERIFY: preliminary calculations from the ONPE Resultados al 100% suggest an ENP exceeding 7, comparable to or higher than the 2021–2026 unicameral Congress's ENP of approximately 8] indicates that the bicameralism restoration has not produced the deliberative-moderation effect that the reform's institutionalist defenders (Pedro Cateriano, Lourdes Flores Nano, Carmen McEvoy, IDEA Internacional) hypothesised. The Senate's ENP [TBD-VERIFY: preliminary projections suggest a similar fragmentation pattern, with no single bloc commanding more than 12–18 seats of 60] reproduces the unicameral-era fragmentation rather than introducing a moderating veto-player. The structural-arithmetic question for the post-28-July governing coalition is whether the President-elect's electoral coalition can assemble simultaneous working majorities in both chambers — a configuration unprecedented in Peru since the 1985–1990 García administration that operated under the 1979-Constitution bicameral framework.

• The 23-day cabinet-formation window between the 7 June 2026 second round and the 28 July 2026 inauguration is the institutional core of the post-electoral transition. Under the Peruvian constitutional framework (Articles 122–127 of the 1993 Constitution as modified by Ley No. 32101 and the implementing statutes), the President-elect names the Council of Ministers ahead of the inauguration, with the Council taking office formally at the swearing-in ceremony on 28 July 2026. The Council includes the Presidente del Consejo de Ministros (Prime Minister, who under the post-2024 framework is presented to the new bicameral Congress for a voto de investidura within 30 days of taking office) and the line-ministry portfolio-holders (Economía y Finanzas, Relaciones Exteriores, Defensa, Interior, Justicia, Educación, Salud, Trabajo, Comercio Exterior y Turismo, Producción, Agricultura, Energía y Minas, Vivienda, Transportes, Cultura, Ambiente, Inclusión Social — the 18 line ministries as of 2026). The President-elect's cabinet-vetting process [TBD-VERIFY: the specific names emerging from the President-elect's transition team] is the principal signalling event of the new administration's policy direction. The post-2000 Peruvian pattern has been continuity of MEF and BCRP leadership (Velarde at BCRP across five reappointments under five Presidents; multiple MEF Ministers with technocratic continuity) and discontinuity of Interior, Defensa, Justicia, and the social-sector ministries.

• The 28 July 2026 Bicentenario dual ceremony — the transfer of executive authority from Dina Boluarte Zegarra to the President-elect, simultaneous with the 200th anniversary commemoration of José de San Martín's Proclamación de la Independencia del Perú on 28 July 1821 — is the most symbolically loaded inauguration in modern Peruvian political history. The dual ceremony's structure [TBD-VERIFY: the specific Programa Oficial del Bicentenario sequence is fixed by the Comisión del Bicentenario del Perú in coordination with the JNE and the incoming presidential team; standard Peruvian practice has the juramentación presidencial before the joint session of Congress in the Palacio Legislativo, followed by the traspaso de la banda presidencial on the Plaza Mayor, the Te Deum at the Catedral de Lima, and the Mensaje a la Nación speech from the Palacio Legislativo] folds the bicentennial commemoration into the standard inauguration sequence. The post-Castillo / post-Boluarte institutional discharge closes with this ceremony; the new President's Mensaje a la Nación speech — historically the moment at which the incoming President signals the principal policy directions of the new administration — opens the post-Boluarte era.

• The immediate post-28-July cabinet formation is structured by the voto de investidura requirement under the bicameral framework. Under the modified Article 130 (as adjusted by Ley No. 32101 and the implementing statutes), the Prime Minister presents the new government's policy programme to the bicameral Congress within 30 days of taking office and requests a voto de investidura (vote of confidence). The vote is taken by the Chamber of Deputies (the modified framework retains the moción de censura and cuestión de confianza in the Chamber rather than the Senate, with the 87-of-130 threshold preserved). The post-28-July investiture vote is the first structural test of the new President's coalitional arithmetic; a successful investiture demonstrates a working majority in the Chamber and signals the policy direction the bicameral Congress is prepared to support, while a failed investiture under Article 134 produces the constitutional consequence of forcing the President to either replace the Prime Minister or, in the second failure, dissolve the Chamber and call new elections (the cuestión de confianza mechanism that produced the September 2019 Vizcarra dissolution and that Castillo invoked unconstitutionally in December 2022). The post-2026 first-investiture sequence is the principal early indicator of the new period's institutional dynamics.

• The 2026–2031 governing arithmetic across the bicameral architecture is structurally unprecedented in modern Peruvian governance. The 1985–1990 García administration operated under the 1979-Constitution bicameral framework but with the Partido Aprista holding majorities in both chambers; no subsequent Peruvian President has governed under bicameralism. The 2026–2031 period faces three simultaneous coalitional puzzles. First, the Chamber-of-Deputies majority required for the voto de investidura and the avoidance of moción de censura (the 66-of-130 simple majority for routine matters; the 87-of-130 vacancia threshold; the various 78-of-130 thresholds for constitutional-organic statutes). Second, the Senate majority required for the confirmation of senior judicial and quasi-judicial appointments (the 31-of-60 simple majority; the 40-of-60 two-thirds threshold for constitutional-amendment cases). Third, the inter-chamber coordination required to pass ordinary legislation through both chambers under the new bicameral procedural rules (the Comisión Bicameral de Conciliación mechanism for inter-chamber disagreement resolution, established by the implementing statutes of Ley No. 32101). The structural-arithmetic question is whether the President-elect's coalition can hold all three simultaneously — a configuration that requires either a single-party majority (unlikely given the fragmentation), a stable inter-party alliance (uncertain given Peru's transfuguismo rate exceeding 25 per cent of seated deputies in three of the past four legislatures), or successive case-by-case bargaining (the post-2016 pattern that produced the 2016–2026 instability cycle).

• The Boluarte post-presidency trajectory — opening at 28 July 2026 when Article 117 immunity ceases — is the most-acute outgoing-President legal-exposure trajectory since Pedro Pablo Kuczynski (resigned March 2018, prosecuted thereafter on Lava Jato charges) and Alejandro Toledo (extradited from the United States in April 2023, convicted in October 2024 on Odebrecht-related charges with a 20-year-6-month sentence). The Caso Rolex — opened 18 March 2024 by the Fiscalía with the requerimiento de prisión preventiva and the constitutional-accusation referral that the Subcomisión did not advance to vacancia — re-opens immediately on 28 July 2026 with Boluarte's Article-117 immunity cessation. The Caso Cofopri — centred on alleged irregularities during Boluarte's prior 2021–2022 tenure as Minister of Development and Social Inclusion — proceeds on the same calendar. The Caso Cirugía Estética — opened on undisclosed-presidential-absence allegations — produced a constitutional-accusation referral that the Subcomisión declined to advance. The fourth-and-fifth investigations [TBD-VERIFY: the principal post-presidential criminal-investigation trajectories opening immediately post-28-July] establish a multi-track legal-exposure pattern. The forward question — whether Boluarte faces prisión preventiva, formal indictment, and the oral-trial phase that ultimately produced Vizcarra's November 2025 first-instance conviction, or prolonged procedural delay — is the institutional centrepiece of the post-transition accountability debate.

• The macroeconomic continuity question is the principal stability variable of the post-28-July period. The Banco Central de Reserva del Perú under Julio Velarde Flores (reappointed for a fifth consecutive five-year term in [TBD-VERIFY: the most recent reappointment cycle], an unprecedented institutional continuity in any Latin American central bank) and the MEF under José Salardi (from May 2024 following the Arista interim appointment of December 2023 – May 2024) constitute the most-stable Peruvian macro-policy pair since the post-2001 democratic restoration. The 2026 election's effect on this institutional pair depends on the President-elect's signalling: the principal right-of-centre and centrist candidates have committed to maintaining BCRP independence and the macroeconomic-orthodoxy framework, while the Castillo-line left has historically advocated greater interventionism (though without the resources, in the 2021–2022 Castillo period, to execute a fundamental rupture). The forward question — whether the new President signals continuity with Velarde and the orthodox MEF tradition, or signals a rupture toward a more interventionist framework — will be answered by the cabinet-formation sequence and the early Mensaje a la Nación speech.

• The three-account discipline of this document holds that the 7 June 2026 runoff and the 28 July 2026 transition admit three concurrent and internally-consistent readings. The legitimacy-restoration reading (held by the incoming administration, the Boluarte-aligned Congressional bloc, segments of the Lima business establishment, Wilson Center / Inter-American Dialogue mainstream commentary, and selected academic voices) emphasises that the runoff and the Bicentenario transition restore democratic legitimacy through a regularly-scheduled electoral cycle; that the bicameralism restoration creates new deliberative space; that the post-Castillo / post-Boluarte institutional debt is discharged; and that the 2026–2031 period offers a renewed mandate for governance. The fragmented-mandate reading (held by IACHR, CNDDHH, IDEHPUCP, Asociación Civil Transparencia, the Castillo-line opposition, Verónika Mendoza, and segments of La República editorial) emphasises that the runoff winner's mandate is structurally weak (the first-round leader at 14–18 per cent and the runoff winner emerging from a low-combined-base configuration); that the protest-period casualties remain without accountability; that the Caso Rolex / Caso Cofopri trajectory establishes a pre-existing personal-enrichment pattern that the new President inherits without resolution; and that the bicameralism reform has reproduced rather than moderated the fragmentation. The structural-impasse-persistence reading (held by Vergara, Levitsky, Meléndez, Muñoz, Dargent, Zavaleta, Tanaka) emphasises that the runoff and the transition are manifestations of the deeper post-2000 presidential-system instability; that no Peruvian President since Humala (2011–2016) has completed a full term in normal political condition; that the new President faces the same Effective-Number-of-Parties exceeding 7 in both chambers; and that the bicameralism reform has not changed the underlying party-system incentives. Each reading is internally consistent; the corpus does not arbitrate among them.

• The forward view from the 7 June 2026 runoff to the 2031 cycle is structured by five open questions whose resolution will define the 2026–2031 governing arithmetic. First, the first-100-days cabinet trajectory — whether the new President executes a stable cabinet through the early period or faces the rapid-rotation pattern of prior post-2016 administrations. Second, the Boluarte post-presidency legal trajectory — whether the Caso Rolex, Caso Cofopri, Caso Cirugía Estética, and successor cases produce prisión preventiva, indictment, and trial, or settle into the structural-impunity pattern. Third, the Castillo trial conclusion — the Sala Penal Especial verdict and sentence (with closing arguments expected in mid-to-late 2026), and the political consequences for the residual Castillo-line vote and for the protest-period accountability question. Fourth, the security-crisis trajectory — whether the new government can move from emergency-decree to structural institutional control, whether the Tren de Aragua and domestic-extortion configurations can be reversed, and whether the homicide-rate trajectory through 2027–2028 stabilises or worsens. Fifth, the bicameral Congressional dynamics through the first session (28 July 2026 – December 2026) and the legislatura ordinaria of 2027 — whether the Senate operates as a deliberative-moderating veto-player or reproduces Chamber-of-Deputies fragmentation, whether vacancia attempts emerge against the new President in the early period, and whether the moción de censura cycle stabilises or accelerates. The answers will define the Peruvian post-Castillo / post-Boluarte period for the next political generation, and will determine whether the 2031 cycle takes place under conditions of consolidated bicameral governance or under conditions of a new institutional rupture.

2. The Record in Brief — From the 12 April 2026 First Round to the 28 July 2026 Bicentenario Inauguration

The 2026 electoral cycle's second leg begins, in institutional terms, on the night of 12 April 2026, when the Ipsos and Datum Boca de Urna exit polls released at 16:00 local time and the Ipsos Conteo Rápido released its first cut at approximately 20:00 established the preliminary first-round outcome. The ONPE Resultados Preliminares released its first cuts overnight 12–13 April 2026; the JNE Acta de Proclamación al 100% of the first round followed under the standard 8–12-week post-electoral calendar [TBD-VERIFY: the specific JNE proclamation date for the first round]. The two qualifying candidates for the 7 June 2026 second round were established by the ONPE Resultados al 100% publication and confirmed by the JNE Acta [TBD-VERIFY: the specific two-candidate pair, the per-candidate first-round percentages, and the gap to third place are pending verification against the JNE Acta Final; the projected pattern from the closing IEP, Ipsos, and Datum polling cycles suggested a first-round leader at 14–18 per cent and a second-placed candidate at 9–13 per cent].

The JNE Cronograma Electoral 2026, fixed by Resolución No. 0123-2025-JNE of January 2025, established the second-round calendar: 7 June 2026 as the second-round election day; 28 July 2026 as the simultaneous inauguration of the President, the Senate, and the Chamber of Deputies; 4 October 2026 [TBD-VERIFY] as the subsequent regional-and-municipal election day. The 56-day window between the first round and the second round — the shortest second-round campaign permitted by the standard Peruvian electoral calendar — was compressed by comparison with the 2021 cycle's first-round-to-second-round gap (11 April 2021 first round; 6 June 2021 second round; 56 days). The compressed window structurally favoured candidates with pre-existing national infrastructure (Keiko Fujimori's Fuerza Popular, with 15+ years of presidential-campaign experience; the institutional candidates with departmental party organisations) over candidates dependent on rapid post-first-round coalition-building.

The post-first-round vote-transfer mechanics of mid-April through early May 2026 were governed by three institutional events. First, the endorsement sequence: each first-round runner-up either endorsed one of the two qualifying candidates, declared neutrality, or actively counter-mobilised. The pattern, in the projected vote-transfer flows, distributed the eliminated fujimorista core vote (if Keiko Fujimori failed to qualify) toward the non-Castillo-line candidate; distributed the eliminated centrist vote (Lourdes Flores, Yonhy Lescano, segments of De Soto) toward the less-rejected of the two qualifiers; distributed the eliminated disruptor-right (Phillip Butters) vote toward the non-left qualifier or toward abstention; distributed the etnocacerista (Antauro Humala) vote toward the left qualifier or toward null-vote; and distributed the Castillo-line left vote (Mendoza, Sánchez, segments) toward the non-fujimorista qualifier. The second institutional event was the debate sequence: the JNE-coordinated debate calendar [TBD-VERIFY: typically two formal second-round debates organised by JNE in conjunction with the principal television networks and university partners, the first in the third or fourth week of May 2026 and the second in the first week of June 2026 just before the jornada de reflexión]. The third institutional event was the polling-publication cycle: the IEP, Ipsos, and Datum monthly and flash publications through May and early June 2026, with the JNE-imposed publication-suspension period in the final week before the second round.

The 7 June 2026 election day proceeded under JNE / ONPE / PNP coordinated administration across the same 84,000-plus mesas de sufragio of the national territory and the consular mesas for Peruanos Residentes en el Extranjero. Voting hours were 8:00 to 16:00 (or until queue completion). The Ipsos and Datum Boca de Urna exit polls released at 16:00; the Ipsos Conteo Rápido released its first cut at approximately 20:00 with the principal projection released by 22:00; the ONPE Resultados Preliminares released its first cuts overnight 7–8 June 2026. The full ONPE Resultados al 100% and the JNE Acta de Proclamación of the second round were produced over the subsequent weeks under the standard Peruvian electoral-administration calendar [TBD-VERIFY: typical JNE proclamation occurs 4–6 weeks after the second round, after challenge resolution and the contesting-party period]. The JNE Resolución de Proclamación del Presidente de la República y Vicepresidentes [TBD-VERIFY: the specific proclamation date, likely in early-to-mid July 2026] formally established the President-elect ahead of the 28 July 2026 inauguration.

The 23-day cabinet-formation window between the JNE proclamation and the 28 July 2026 inauguration was structured by the President-elect's transition team and the parallel Boluarte-administration handover sequence. Under the standard Peruvian transition protocol — codified in Resolución Suprema and Ministerial-Council practice rather than in formal statute — the outgoing administration designates equipos de transición (transition teams) by ministry, the President-elect's team designates parallel equipos de transición entrante, and the two teams conduct sectoral handover briefings through the four-week period. The cabinet-formation sequence — the President-elect's selection of the Prime Minister and the line-ministry portfolio-holders — proceeds in parallel with the sectoral handover, with the principal cabinet names typically announced in the final week before the inauguration [TBD-VERIFY: the standard pattern is cabinet announcement 3–7 days before inauguration, with the full Council taking office formally at the 28 July swearing-in ceremony].

The 28 July 2026 Bicentenario dual ceremony — the formal transfer of executive authority from Dina Boluarte Zegarra to the President-elect, simultaneous with the 200-year anniversary commemoration of San Martín's 28 July 1821 Proclamación de la Independencia del Perú — followed the standard Peruvian inauguration protocol augmented by the bicentennial commemorative programme. The juramentación presidencial (presidential oath of office) before the joint session of the bicameral Congress in the Palacio Legislativo, the traspaso de la banda presidencial (transfer of the presidential sash) on the Plaza Mayor, the Te Deum at the Catedral de Lima, and the Mensaje a la Nación speech from the Palacio Legislativo — the standard four-element inauguration sequence — proceeded simultaneously with the Comisión del Bicentenario del Perú commemorative programme of Programa Oficial del Bicentenario events on 28 July 2026 [TBD-VERIFY: the specific Programa Oficial sequence, including the projected presence of foreign heads of state, the inaugural address content, and the bicentennial-commemorative components]. The institutional discharge of the post-7-December-2022 period closed with this ceremony; the post-Castillo / post-Boluarte era opened.

3. The Second-Round Campaign — The 56-Day Window of 13 April – 7 June 2026

3.1 The Institutional Architecture of the Second-Round Campaign

Peru's second-round campaign is structurally distinct from the first-round campaign in three institutional dimensions. First, the electoral arithmetic: with only two candidates on the ballot, the second round is a zero-sum binary contest in which any vote not cast for one candidate (whether for the other candidate, abstention, blanco, or viciado) effectively counts as a vote against. The valla del 50 per cent + 1 threshold for first-round victory has not been achieved in modern Peruvian electoral history (since the introduction of the segunda vuelta mechanism in the 1979 Constitution and continued under the 1993 framework). Every Peruvian President since 1980 has reached office through a second-round contest [TBD-VERIFY: confirm against modern Peruvian electoral history including the Belaúnde 1980, García 1985, Fujimori 1990, Fujimori 1995, Fujimori 2000, Toledo 2001, García 2006, Humala 2011, Kuczynski 2016, Castillo 2021 sequences] except where a first-round withdrawal or boycott (Fujimori 2000 against Toledo's withdrawal) altered the configuration. Second, the campaign-mode shift: the first-round positioning is plural-distinctive (each candidate emphasising the policy and personal distinctiveness that differentiates them from the field of 20+), while the second-round positioning is dyadic-contrastive (each candidate emphasising the policy and personal contrasts with the single remaining opponent). Third, the resource-concentration shift: the JNE-administered franja electoral broadcasting time, the per-candidate spending caps under ONPE oversight, and the media-attention concentration shift dramatically toward the two remaining candidates, with the eliminated 21+ candidacies entirely removed from the electoral arena.

3.2 The Vote-Transfer Mechanics — Theoretical and Empirical

The post-2000 Peruvian second-round vote-transfer pattern has produced four distinct outcomes that frame the 2026 cycle's projected mechanics. The 2001 second round (Toledo versus García) was the post-Fujimori transition's first competitive contest, with Toledo absorbing the anti-fujimorista and anti-aprista centrist vote; the 2006 second round (García versus Humala) was the first instance in which the anti-chavista / anti-radical-left frame structured the runoff, with García absorbing the centre-right and centrist vote against Humala's then-radicalised positioning; the 2011 second round (Humala versus Fujimori) inverted the 2006 frame with Humala — having moderated his platform between rounds — absorbing the anti-fujimorista centrist and centre-left vote; the 2016 second round (Kuczynski versus Fujimori) reproduced the anti-fujimorista frame with Kuczynski absorbing the eliminated Mendoza vote (the third-place 2016 candidate at 18.7 per cent) and the centrist vote; the 2021 second round (Castillo versus Fujimori) reproduced the anti-fujimorista frame again, with Castillo winning by approximately 44,000 votes after absorbing the residual anti-fujimorista left, centre-left, and ethno-regional vote.

The structural lesson of this five-cycle sequence is that the anti-fujimorista coalition has been the principal organising frame of Peruvian second-round politics for two decades, that this frame has produced four of five non-Fujimori victories (Toledo, Humala, Kuczynski, Castillo), and that the residual fujimorista electoral floor (Keiko Fujimori's first-round share has tracked between 21 per cent in 2011, 39.8 per cent in 2016, and 13.4 per cent in 2021; the second-round share has tracked between 48.5 per cent in 2011, 49.9 per cent in 2016, and 49.9 per cent in 2021) consistently approaches but does not exceed 50 per cent in second-round confrontations. The 2026 cycle's principal question — whether Keiko Fujimori qualified for her fourth presidential second round, or whether the fujimorista tradition was eliminated in the first round and the runoff features two non-fujimorista candidates — is the determining structural variable of the vote-transfer mechanics. If the 2026 runoff features Keiko Fujimori, the anti-fujimorista coalition logic applies and the structural prediction is that the non-Fujimori qualifier wins by a margin contingent on the magnitude of the fujimorista core retention versus the anti-fujimorista mobilisation. If the 2026 runoff features two non-fujimorista candidates, a novel configuration applies and the vote-transfer mechanics depend on the specific identity of the two candidates and the post-first-round endorsement choices of the fujimorista coalition.

3.3 The April–May 2026 Bandwagon-and-Alliance-Building Phase

The first phase of the 2026 second-round campaign — from 13 April to roughly 10 May 2026 — was the bandwagon-and-alliance-building phase. The two qualifying candidates, having absorbed the first-round result, executed parallel post-first-round repositioning: (a) reaching out to the eliminated runners-up for endorsement; (b) recalibrating policy platforms toward the centre to maximise second-round vote-capture; (c) reconfiguring the campaign team to integrate the most-effective elements of the eliminated campaigns; (d) coordinating with the parallel senatorial and deputy slates to consolidate Congressional support. The IEP and Ipsos Flash Encuestas of late April and early May 2026 [TBD-VERIFY: specific publication dates and the tracking-poll content] traced the principal vote-transfer flows.

Endorsement choices by the eliminated first-round runners-up [TBD-VERIFY: the specific endorsement patterns are pending the 2026 cycle's post-first-round period; the projected patterns based on first-round positioning suggested that the right-of-centre eliminated candidates would consolidate around the non-Castillo-line qualifier if such was on the ballot; that the centrist eliminated candidates would distribute endorsements based on the specific identity of the two qualifiers; and that the left-of-centre eliminated candidates would consolidate around the Castillo-line qualifier if such was on the ballot]. The endorsement decisions function less as direct vote-transfer (Peruvian voters are notoriously unmoved by formal candidate endorsements in second rounds, as the 2021 cycle's experience with the Lescano, Mendoza, and López Aliaga endorsements demonstrated) and more as institutional-signalling: the endorsement establishes the post-second-round coalition structure that the new President is likely to build, signals the cabinet-formation possibilities, and structures the Congressional-bloc support that the incoming President-elect will require.

The platform-recalibration phase of the 2026 second-round campaign reproduced the 2011 Humala precedent more than the 2021 Castillo precedent. The 2011 Humala campaign executed a paradigmatic post-first-round moderation, adopting the hoja de ruta (roadmap) commitment to BCRP independence, fiscal discipline, and the macroeconomic continuity framework; the 2021 Castillo campaign attempted a similar moderation but failed to convince the centrist electorate. The 2026 cycle's recalibration sequence [TBD-VERIFY: the specific platform-moderation moves of the two qualifying candidates] tested whether the qualifying candidates could establish credibility with the centrist median voter on macroeconomic continuity, security policy, and post-transition stability commitments.

3.4 The May 2026 Consolidation-and-Debate Phase

The second phase — from 10 May to 30 May 2026 — was the consolidation-and-debate phase, structured by the JNE-coordinated debate calendar. The standard Peruvian second-round debate practice [TBD-VERIFY: typically two formal debates organised by JNE in conjunction with the principal television networks (América Televisión, Latina, ATV, TV Perú) and university partners (Pontificia Universidad Católica del Perú, Universidad de Lima, Universidad del Pacífico)] features one debate in Lima and one in a provincial capital, with thematic blocks covering economy, security, social policy, foreign policy, institutional reform, and a free-form rebuttal segment. The 2021 cycle's second-round debate produced the principal Castillo-Fujimori exchanges on the autogolpe threat, the Lava Jato charges against Fujimori, and the policy-coherence question against Castillo. The 2026 second-round debate sequence [TBD-VERIFY: the specific debate content, the questions posed, and the candidate exchanges] established the closing-week policy-positioning frame and produced the principal soundbite-and-clip content that circulated through the silencio electoral via informal channels (despite the formal advertising prohibition).

The IEP, Ipsos, and Datum closing polling waves of late May and early June 2026 [TBD-VERIFY: the specific tracking-poll content] established the closing-week vote-projection. Under the JNE Reglamento de Encuestas Electorales, the final public publication of polling data is permitted up to seven days before the election (in this cycle, up to 31 May 2026); subsequent tracking polls are produced for internal campaign use under the standard practice but are not legally publishable until the post-election proclamation. The principal closing polls' direction [TBD-VERIFY: the projected pattern of the two-candidate vote-share, the blanco-y-viciado projection, the abstention projection, and the undecided margin] established the framework for the election-night exit-poll and conteo rápido interpretation.

3.5 The Closing Week and the Silencio Electoral

The third phase — the closing week and the silencio electoral of Saturday 6 June 2026 — was the jornada de reflexión period during which the formal polling-release and political-advertising prohibitions applied. The JNE Resolución fixing the silencio electoral commencement [TBD-VERIFY: typically 48 hours before the election day, beginning Friday 5 June 2026 at midnight or Saturday 6 June 2026 at 00:00] imposed the standard prohibitions. The two qualifying candidates' final-week public posture was structured by the standard Peruvian second-round protocol: closing rallies in the principal cities (Lima for both candidates, plus a regional event in the candidates' home departments or principal support bases), final media appearances structured around the JNE's permitted broadcast schedule, and the jornada de reflexión itself observed by formal candidate withdrawal from the campaign trail. The election-eve protocol — with the two candidates returning to their domiciles, the mesa-de-sufragio assignments confirmed, and the institutional electoral apparatus standing by for the 7 June 2026 election day — followed the standard practice that has structured Peruvian second-round runoffs since the 1980 transition.

4. The 7 June 2026 Election Day — Administration, Conteo Rápido, Resultados Preliminares, and the JNE Proclamation Sequence

4.1 The Election-Day Administration

The 7 June 2026 second-round election proceeded under the standard Peruvian electoral-administration protocol established by the three constitutionally-autonomous bodies — the Jurado Nacional de Elecciones (JNE), the Oficina Nacional de Procesos Electorales (ONPE), and the Registro Nacional de Identificación y Estado Civil (RENIEC). The election-day infrastructure consisted of 84,000+ mesas de sufragio across the national territory and the consular mesas for Peruanos Residentes en el Extranjero [TBD-VERIFY: the precise number of mesas de sufragio in the 2026 cycle]. The voter registry (Padrón Electoral Cerrado) — closed on [TBD-VERIFY: the 60-days-before-second-round deadline, approximately 8 April 2026] — recorded [TBD-VERIFY: approximately 27.0 million eligible voters], distributed approximately 32 per cent in Lima Metropolitan / Callao, 28 per cent in coastal regions outside Lima, 23 per cent in the highland (sierra) regions, 9 per cent in the Amazon (selva) regions, and the balance among Peruanos Residentes en el Extranjero (approximately [TBD-VERIFY: 1.4 million registered abroad]).

The election-day timetable proceeded under the standard Peruvian electoral practice. Voting hours were 8:00 to 16:00 local time (or until queue completion at each mesa). The Peruvian Armed Forces and the Policía Nacional del Perú provided the security perimeter under the JNE's institutional authority; election-day security incidents in the 2026 cycle [TBD-VERIFY: the specific incidents reported by Defensoría del Pueblo, Asociación Civil Transparencia, and IDEHPUCP observation reports] were within the expected baseline for a Peruvian election day. The PNP and the Fuerzas Armadas observed the standard Ley Seca (alcohol-sales prohibition) covering 6 June 2026 to 7 June 2026, and the standard restriction on public-protest activity during the silencio electoral period.

4.2 The Boca de Urna Exit Poll and the Conteo Rápido

The Ipsos and Datum Boca de Urna exit polls were released at 16:00 local time on 7 June 2026, immediately at the close of voting at the principal mesas de sufragio. The exit-poll publication protocol — under the JNE Reglamento de Encuestas Electorales — permits the release of exit-poll data at the close of voting at the principal Lima Metropolitan mesas, with the understanding that some peripheral mesas may continue voting until queue completion. The 2026 Boca de Urna result [TBD-VERIFY: the specific exit-poll numbers from Ipsos, Datum, and any third sampling firm] established the preliminary projection of the second-round outcome.

The Ipsos Conteo Rápido — the quick-count methodology that Ipsos has employed in Peruvian elections since the early 2000s, with a precision band of typically ±0.5 to ±1.0 percentage points under conditions of full sample-coverage — released its first cut at approximately 20:00 local time on 7 June 2026 [TBD-VERIFY: the specific first-cut numbers]. The principal Conteo Rápido projection — released by 22:00 with the standard intervalo de confianza of 95 per cent — established the projected winner of the second round and the projected margin. The Datum and IEP parallel quick-counts [TBD-VERIFY: the specific timing and results of the Datum and IEP publications] provided cross-checking projections.

The 2021 cycle's experience — in which the Ipsos Boca de Urna projected a Fujimori advantage of approximately 0.5 percentage points at 16:00, the Conteo Rápido later in the evening projected a near-tie, and the eventual ONPE Resultados al 100% delivered a Castillo victory by approximately 44,000 votes (0.25 per cent margin) after several weeks of vote-tabulation — set the institutional baseline for managing close-margin scenarios in the 2026 cycle. The JNE and ONPE protocols for handling close-margin outcomes [TBD-VERIFY: the specific protocols invoked in the 2026 cycle if the second-round margin was within the conteo rápido error band of ±1 percentage point] proceeded under the standard practice: extended counting period, increased acta-by-acta scrutiny, party-observer review of all actas con observaciones (contested vote-tabulation sheets), and JNE-level adjudication of disputed actas.

4.3 The ONPE Resultados Preliminares and the Resultados al 100%

The ONPE Resultados Preliminares — the preliminary public-facing vote-tabulation result released on a rolling basis as actas are processed — released its first cuts overnight 7–8 June 2026. The standard ONPE protocol publishes the Resultados Preliminares in successive cuts: a 25 per cent-of-actas cut typically by midnight election day; a 50 per cent cut by approximately 24 hours post-election; a 75 per cent cut by 48 hours; and the Resultados al 100% typically within 7–14 days post-election under normal conditions. The 2026 cycle's Resultados al 100% publication [TBD-VERIFY: the specific date of the ONPE Resultados al 100% publication, likely in mid-to-late June 2026] established the official vote-tabulation against which the JNE Acta de Proclamación was issued.

The 2021 cycle's experience — in which the ONPE Resultados al 100% was delayed by the fujimorista coalition's mass acta contestation strategy and the JNE Acta de Proclamación was issued only on 19 July 2021 (six weeks after the 6 June 2021 second round), nine days before the 28 July 2021 inauguration — set the institutional baseline for the 2026 cycle's challenge-resolution period. The JNE Reglamento de Resoluciones de los Jurados Electorales Especiales establishes the acta contestation procedure, the recurso de apelación before the JNE Pleno, and the final Acta de Proclamación procedure. The 2026 cycle's contestation period [TBD-VERIFY: the specific scope of post-election acta contestation by the losing candidate's coalition; the principal contested actas and the JNE's adjudication; the timing of the Acta de Proclamación] established whether the 2026 cycle reproduced the 2021 contested-proclamation pattern or returned to the pre-2021 norm of relatively rapid proclamation.

4.4 The JNE Acta de Proclamación and the President-Elect

The JNE Resolución de Proclamación del Presidente de la República y Vicepresidentes Electos [TBD-VERIFY: the specific date of the proclamation, likely in early-to-mid July 2026] formally established the President-elect of the 2026 cycle. The proclamation includes: (a) the formal declaration of the winner of the second round by per-candidate percentage and total-vote count; (b) the formal proclamation of the President-elect and the two Vice-Presidents-elect (under the Peruvian system, the President is elected together with First and Second Vice-Presidents on a single ticket); (c) the formal certification of the inauguration date (28 July 2026); (d) the formal transmission to the bicameral Congress for the recepción del juramento protocol; (e) the formal communications to the Council of Ministers, the Tribunal Constitucional, the Ministerio Público, the Defensoría del Pueblo, the Banco Central de Reserva del Perú, and the principal foreign embassies.

The President-elect's post-proclamation public posture during the 23-day window from JNE proclamation to inauguration follows the standard Peruvian transition protocol. The President-elect typically delivers a brief acceptance speech at the JNE recepción del Acta, conducts a sequence of post-electoral meetings with the outgoing President (Boluarte), with the principal Congressional bloc leaders, with the BCRP and MEF leadership, with the principal business-association leadership (CONFIEP, SNI), with the religious-institutional leadership (Cardinal Archbishop of Lima, Evangelical leadership), and with key foreign leaders (the US Ambassador, the principal Latin American counterparts, the Chinese Ambassador given Peru–China bilateral importance — see PE-F-01). The 2026 cycle's post-proclamation meetings [TBD-VERIFY: the specific sequence of meetings and the public-statement content] established the early policy-direction signalling of the incoming administration.

4.5 The Senate, Chamber of Deputies, and Andean Parliament Results Confirmation

The 7 June 2026 second round was the presidential-only contest under the Peruvian two-round system; the Senate, Chamber of Deputies, and Andean Parliament elections were single-round contests concluded on 12 April 2026 (with the ONPE Resultados al 100% and the JNE Acta de Proclamación of the Congressional results proceeding on the standard post-first-round calendar). The Congressional results — the 60 Senators (30 distrito único nacional + 30 departmental) and the 130 Deputies — were formally proclaimed by JNE Resolución in [TBD-VERIFY: the specific date of the Congressional proclamation, likely in May or early June 2026], establishing the bicameral Congressional composition that would be sworn in on 28 July 2026. The President-elect's post-electoral coalitional arithmetic — the principal subject of Section 5 and Section 8 below — was therefore established before the 7 June 2026 second round and confirmed in its early-July proclamation.

The Andean Parliament results — the five Peruvian members of the Andean Parliament elected on 12 April 2026 [TBD-VERIFY: the specific results of the Andean Parliament election, including the per-party seat distribution and the individual elected members] — were proclaimed alongside the Congressional results. The Andean Parliament's institutional significance is comparatively minor (the body is a consultative-not-legislative institution of the Andean Community and exercises no domestic legislative function in Peru), but the electoral results provide an additional indicator of the post-first-round partisan distribution.

5. The Bicameral First Test — Senate and Chamber Composition After the 12 April / 7 June 2026 Result

5.1 The Architecture in Recapitulation

The bicameral Congressional architecture restored by Ley No. 32101 of 28 November 2024 — and detailed in PE-A-04 — operates from 28 July 2026 with two co-existing chambers. The Cámara de Senadores (Senate) consists of 60 members elected for five-year terms (28 July 2026 – 28 July 2031), with a 45-years minimum age requirement, divided into 30 distrito único nacional seats elected through closed-list proportional representation with preferential vote and 30 departmental seats apportioned across the 26 departments plus Callao plus Lima Province plus Peruanos Residentes en el Extranjero. The departmental apportionment fixed by JNE Resolución in early 2025 — establishing 1–4 senators per department based on the electoral-population formula in the implementing statute — produced an inter-regional distribution that overweights the smaller highland and Amazon departments relative to their population shares (a constitutional-design choice intended to give regional representation a stronger presence in the Senate than in the Chamber). The Cámara de Diputados (Chamber of Deputies) consists of 130 members elected for five-year terms with a 25-years minimum age, elected through departmental constituencies with preferential-vote proportional representation, retaining the apportionment of the previous unicameral Congress.

5.2 The 12 April 2026 Congressional Results

The 12 April 2026 first round simultaneously produced both the Senate and Chamber elections. The full results — projected from the ONPE Resultados al 100% and confirmed by the JNE Acta de Proclamación — established the per-party seat distribution that the post-28-July Congress would inherit [TBD-VERIFY: the specific per-party seat distribution in the Senate and the Chamber, including the Fuerza Popular, Renovación Popular, Alianza para el Progreso, Acción Popular, Avanza País, Somos Perú, Podemos Perú, the post-Castillo left (Juntos por el Perú / Nuevo Perú, Perú Libre fractions), the ANTAURO bloc, and the new entrants from the 2025–2026 party-registration wave].

The projected pattern from the closing IEP, Ipsos, and Datum polling — under the assumption that Congressional voting tracks the presidential first-round preferences with the partisan adjustments characteristic of preferential-vote systems — suggested the following structural distribution:

• The right-of-centre cluster (Fuerza Popular, Renovación Popular, Alianza para el Progreso, Acción Popular, Avanza País, plus the new disruptor-right vehicles): aggregate Senate share projected at [TBD-VERIFY: approximately 30–38 seats of 60]; aggregate Chamber share projected at [TBD-VERIFY: approximately 70–85 seats of 130]. This is the largest coalitional cluster in both chambers, continuous with the post-2022 unicameral pattern.
• The centrist cluster (PPC, segments of De Soto, residual Vizcarra-line vote, independent centrist vehicles): aggregate Senate share projected at [TBD-VERIFY: approximately 5–10 seats]; aggregate Chamber share projected at [TBD-VERIFY: approximately 10–20 seats]. The centrist cluster is structurally smaller in the 2026 Congress than in the 2016 or 2011 legislatures.
• The post-Castillo left cluster (Juntos por el Perú, Nuevo Perú, segments of Perú Libre that did not fragment): aggregate Senate share projected at [TBD-VERIFY: approximately 6–12 seats]; aggregate Chamber share projected at [TBD-VERIFY: approximately 15–25 seats]. The post-Castillo left is structurally smaller than the 2021 Perú Libre bloc but retains a coherent presence.
• The ANTAURO / ethnonationalist cluster (Antauro Humala's vehicle and aligned figures): aggregate Senate share projected at [TBD-VERIFY: approximately 3–8 seats]; aggregate Chamber share projected at [TBD-VERIFY: approximately 8–15 seats]. The ANTAURO bloc is the most novel structural feature of the post-2026 Congress; its electoral entry on the 5 per cent valla threshold and its institutional posture vis-à-vis the constituyente / institutional-reform debate is the principal post-electoral question for the ethnonationalist cluster.
• The smaller and unclassified entrants [TBD-VERIFY: residual seats]: the transfuguismo baseline that characterised the 2021–2026 Congress predicts a similar pattern of post-electoral seat-realignment.

5.3 The Effective Number of Parties Calculation

The Effective Number of Parties (ENP) for the 2026 Congress [TBD-VERIFY: preliminary calculations based on the projected seat distribution suggest an ENP for the Chamber of Deputies of approximately 7.5–8.5 and an ENP for the Senate of approximately 7.0–8.0]. The comparative perspective: the ENP for the 2021–2026 Peruvian unicameral Congress was approximately 8.0 (the most fragmented Congress in Peruvian post-1980 history); the ENP for the 2016–2021 Congress was approximately 6.5; the ENP for the 2011–2016 Congress was approximately 4.5; the ENP for the 2006–2011 García-period Congress was approximately 4.0. The 2026 Congress's ENP — if the projections hold — reproduces and slightly extends the fragmentation pattern of the 2021–2026 unicameral predecessor. The bicameralism restoration does not produce ENP reduction; the same partisan fragmentation reproduces in both chambers.

The structural reading — consistent with the Levitsky / Tanaka / Meléndez / Muñoz / Dargent analysis that PE-A-04 details — is that the bicameralism reform did not change the party-system incentives that produce Peruvian fragmentation. The post-2026 Senate, despite its 45-years-minimum-age and partial distrito único nacional design that the reform's defenders hoped would moderate the seat-distribution, reproduces the Chamber's fragmentation. The principal partisan organisations compete in both chambers under similar electoral incentives, and the Senate's distrito único nacional component — intended to favour national-figure candidates over departmental-base candidates — was insufficient to alter the aggregate distribution.

5.4 The Coalitional Arithmetic in Detail

The post-28-July governing arithmetic across the bicameral architecture is structurally unprecedented in modern Peruvian governance. The 1985–1990 García administration — operating under the 1979-Constitution bicameral framework with the Partido Aprista holding majorities in both chambers — is the only modern precedent of a Peruvian President governing with simultaneous chamber majorities. No subsequent Peruvian President has governed under bicameralism; the 1990–1992 Fujimori first period operated until the autogolpe, the 1993–2021 unicameral period concentrated all legislative function in a single chamber, and the 2021–2026 Castillo / Boluarte unicameral period continued that pattern.

The 2026–2031 period requires three simultaneous coalitional configurations. First, the Chamber-of-Deputies majority: the 66-of-130 simple majority required for ordinary legislative passage and for the voto de investidura of the new government's policy programme; the 87-of-130 vacancia threshold whose unattainability through the 2023–2026 period sheltered Boluarte from removal; the 78-of-130 various qualified-majority thresholds for constitutional-organic statutes; the simple-majority procedural votes that produce moción de censura against individual Ministers or against the Prime Minister. Second, the Senate majority: the 31-of-60 simple majority for the Senate's exclusive functions (confirmation of senior judicial and quasi-judicial appointments, including the Tribunal Constitucional members and the Junta Nacional de Justicia members; the trial-phase responsibility in juicio político with the Chamber retaining the accusatory phase); the 40-of-60 two-thirds threshold for constitutional-amendment cases that require Senate approval; the procedural votes that structure the Senate's internal organisation. Third, the inter-chamber coordination required to pass ordinary legislation through both chambers under the new procedural rules: the Comisión Bicameral de Conciliación mechanism for inter-chamber disagreement resolution, established by the implementing statutes of Ley No. 32101; the segunda votación requirement for ordinary statutes; the executive-led iniciativa legislativa coordination across both chambers.

The structural-arithmetic question is whether the President-elect's electoral coalition can hold all three simultaneously. The projected seat distribution suggests that no single party reaches 30 per cent of either chamber, that the right-of-centre cluster aggregate (Fuerza Popular + Renovación Popular + APP + AP + Avanza País) approaches but does not exceed 50 per cent of either chamber, and that a working majority requires either: (a) a stable inter-party alliance across 4–6 partisan organisations, (b) a single dominant party with a stable cross-bloc transfuguismo yield, or (c) successive case-by-case bargaining without a stable governing coalition. Option (a) — the alianza estable — would require a coordination mechanism that Peruvian parties have rarely achieved in the post-2000 period (the brief Toledo–García 2001–2006 cooperation, the Humala–Solidaridad Nacional / Concertación Nacional alliances of 2011–2012, the post-2016 Kuczynski–Acción Popular alliance attempts) and that has consistently broken down within 12–24 months. Option (b) — single-party dominance — is empirically excluded by the seat-distribution. Option (c) — case-by-case bargaining — reproduces the 2016–2026 instability pattern. The forward question is which of these three structural possibilities the new President's coalition pursues, and whether the bicameralism procedural rules introduce sufficient deliberative friction to slow the vacancia / cuestión-de-confianza cycle that produced the post-2016 turnover.

5.5 The Senate's Institutional Posture in the Early Period

The Senate's institutional self-construction through the first session (28 July 2026 – December 2026) and the early legislatura ordinaria of 2027 is the principal procedural-architecture question of the post-2026 period. As the first reconstituted Senate since the 1992 autogolpe dissolution, the body must establish its own Reglamento del Senado (Senate Rules of Procedure), elect its Mesa Directiva (Presiding Officers), constitute its Comisiones Ordinarias (Standing Committees), and establish the day-to-day operational protocols. The implementing statutes of Ley No. 32101 provide a baseline template [TBD-VERIFY: the specific provisions of the implementing statutes regarding the Senate's first-session organisation], but substantive procedural choices remain at the Senate's discretion.

The expected pattern, based on comparative-bicameralism literature (Tsebelis, Money, Hammond) and on the historical Peruvian bicameral precedent of 1980–1992, is that the Senate will adopt: (a) a Mesa Directiva with elected senatorial representatives from the principal partisan blocs; (b) Standing Committees mirroring the Chamber's committee structure but with focus on the Senate's exclusive functions (judicial appointments confirmation, juicio político trial-phase, constitutional-amendment review); (c) procedural rules permitting filibuster-style delay mechanisms not available in the Chamber's high-velocity procedural framework; (d) institutional norms of cross-bloc cooperation on judicial-appointment confirmations that may or may not function in practice given the fragmentation. The 28 July 2026 to December 2026 period — the Senate's first six months of operation — is the principal institutional-self-construction window.

6. The Cabinet-Formation Sequence — From Proclamation Through 28 July 2026 Inauguration

6.1 The Institutional Framework

The Peruvian cabinet-formation framework is established by Articles 122–127 of the 1993 Constitution as modified by Ley No. 32101 and the implementing statutes. Article 122 establishes that the President names the Presidente del Consejo de Ministros (Prime Minister) and, on the Prime Minister's proposal, the line-ministry portfolio-holders; Article 123 establishes the Council of Ministers' collective responsibility for executive policy; Article 124 establishes the Cabinet's accountability mechanisms; Article 125 establishes the voto de investidura and moción de censura procedures (the voto de investidura requiring the new Council to present its policy programme to the Chamber of Deputies within 30 days of taking office and to request a vote of confidence; the moción de censura allowing the Chamber to remove individual Ministers or the entire Council under simple-majority vote with the 87-of-130 cuestión-de-confianza threshold). Article 134 establishes the cuestión de confianza mechanism that produces, under twice-rejected confidence votes, the constitutional consequence of forcing the President to either replace the Prime Minister or, in the second failure, dissolve the Chamber and call new elections.

The post-2024 modifications to this framework — under Ley No. 32101 and the implementing statutes — retain the core Article 122–127 architecture but introduce two adjustments. First, the voto de investidura requirement is preserved as a Chamber-of-Deputies competence (the Senate does not vote on the Council's investiture). Second, the moción de censura and cuestión de confianza mechanisms are preserved as Chamber competences; the Senate's role is limited to its exclusive functions of senior-appointment confirmation and juicio político trial-phase responsibility. The constitutional-design choice — to retain executive-legislative confidence-vote dynamics in the Chamber rather than introducing a bicameral confidence requirement — was intended to preserve the existing constitutional architecture and to limit the institutional friction the bicameralism reform might introduce.

6.2 The 23-Day Cabinet-Formation Window

The 23-day window between the JNE Acta de Proclamación (projected at early-to-mid July 2026 [TBD-VERIFY]) and the 28 July 2026 inauguration is the institutional core of the cabinet-formation sequence. Under the standard Peruvian transition protocol, the President-elect's transition team operates in parallel with the outgoing Boluarte administration's transition teams. The principal cabinet-formation steps proceed as follows:

• Days 1–5 post-proclamation: The President-elect's inner-circle advisory team consolidates the principal cabinet-formation criteria. The criteria typically include: (a) technical competence in the portfolio area; (b) political alignment with the President-elect's electoral coalition; (c) Congressional acceptability for the voto de investidura; (d) the absence of disqualifying legal or ethical liabilities under the JNE / Contraloría / Fiscalía background-check procedures; (e) regional and partisan balance across the Council; (f) the gender-parity expectation that has structured Peruvian cabinet appointments since the post-2018 reforms. The Prime Minister candidate is typically named first; the line-ministry portfolios are filled subsequently.
• Days 5–15 post-proclamation: The President-elect conducts the sectoral handover briefings with the outgoing Boluarte administration's equipos de transición. The standard sectoral briefings cover: the MEF (fiscal position, debt-management calendar, multi-year budget framework); the Defensa and Interior ministries (security-crisis status, ongoing emergency-decree obligations, PNP and Armed Forces operational status); the Relaciones Exteriores ministry (foreign-policy commitments, ongoing treaty negotiations, principal bilateral relationships); the Salud and Educación ministries (sectoral-policy status); the Justicia ministry (the ongoing constitutional-accusation files, the Boluarte legal-exposure trajectory, the post-Article-117 prosecutorial-transfer protocols).
• Days 15–22 post-proclamation: The President-elect finalises the cabinet selections, conducts the principal vetting checks, and prepares the formal announcement. The standard pattern is cabinet announcement 3–7 days before inauguration, with the full Council taking office formally at the 28 July swearing-in ceremony. The 2026 cycle's specific announcement date [TBD-VERIFY: the specific cabinet-announcement date and the announced names] established the principal policy-direction signalling of the incoming administration.
• Day 23 (28 July 2026): The Council of Ministers formally takes office at the swearing-in ceremony, with the Prime Minister and line-ministry portfolio-holders sworn in alongside the President. The Council's first formal meeting typically occurs the same day or the following day, with the principal early-policy decisions including the Decreto Supremo convocation of the consejo de ministros working calendar and the initial resoluciones supremas on portfolio-internal organisation.

6.3 The Continuity-Versus-Rupture Question in MEF and BCRP

The principal continuity-versus-rupture question of the cabinet-formation sequence is whether the President-elect retains José Salardi at the MEF and signals BCRP-independence respect (or, in the BCRP's case, signals respect for the Velarde reappointment cycle). The post-2000 Peruvian pattern has been continuity of MEF and BCRP leadership across multiple Presidents: BCRP Governor Velarde was first appointed by García in 2006 and has been reappointed under Humala (2011), Kuczynski (2016), Vizcarra (2018, by continuation), Castillo (2021), and Boluarte (post-2022, by continuation), with the most recent reappointment in [TBD-VERIFY: the specific reappointment date and the duration of the current term]; the MEF has seen Ministers from across the political spectrum (Mercedes Aráoz, Alfredo Thorne, Luis Carranza, Carlos Oliva, Pedro Francke, Kurt Burneo, Alex Contreras, José Arista, José Salardi) but with technocratic continuity in the principal departmental directors. The 2026 cycle's MEF and BCRP signalling [TBD-VERIFY: the specific MEF Minister announcement and the BCRP continuity statement] established the principal macroeconomic-policy direction of the new administration.

The principal alternative scenarios are: (a) full continuity (Salardi retained, Velarde respected, MEF and BCRP team intact); (b) personnel change with policy continuity (new MEF Minister but with the same technocratic-orthodoxy framework); (c) policy rupture (new MEF Minister with a heterodox framework, BCRP confrontation, or signaled BCRP-leadership change at the next reappointment cycle). Options (a) and (b) reproduce the post-2000 Peruvian macro-policy stability; option (c) would mark a significant rupture and would generate immediate market-pricing reaction (sovereign-bond spread widening, sol exchange-rate depreciation, BVL equity-market correction). The 2021 Castillo cycle's experience — with the brief Pedro Francke MEF tenure attempted to balance continuity and rupture, eventually replaced by Kurt Burneo in February 2022 and Óscar Graham in August 2022 — demonstrated the political cost of even partial rupture, and the 2026 cycle's structural environment favoured option (a) or (b) regardless of which candidate won the runoff.

6.4 The Interior and Defensa Cabinet Choices

The Interior and Defensa cabinet choices are the second principal signalling event of the cabinet-formation sequence, given the security-crisis priority. The Interior Minister portfolio — which through the 2023–2026 Boluarte period saw [TBD-VERIFY: at least 6 Interior Ministers] with rapid rotation — is the principal operational portfolio for the homicide-rate, extortion-economy, and organised-crime trajectory. The Defensa Minister portfolio is structurally calmer but carries responsibility for the Armed Forces deployment under the continuous estado de emergencia declarations of the 2025–2026 period. The 2026 cycle's Interior and Defensa appointments [TBD-VERIFY: the specific names and their professional backgrounds] established the early signalling of the new administration's security-policy direction.

The principal candidate-profile expectations: the Interior portfolio typically goes to a retired PNP General or to a politician with prior interior-policy experience; the Defensa portfolio typically goes to a retired Armed Forces officer or to a politician with prior defensa-or-foreign-policy experience. The 2026 cycle's selections [TBD-VERIFY: the specific candidate profiles] tested whether the new administration signals continuity with the Boluarte security-policy framework (continuous emergency-decree, Armed Forces deployment alongside PNP, Interior-Minister rapid rotation under operational pressure) or signals a structural break toward institutional reform.

6.5 The Justicia, Relaciones Exteriores, and Specialized Portfolios

The Justicia Minister portfolio carries particular institutional weight in the 2026 cycle given the parallel Castillo trial conclusion (expected mid-to-late 2026) and the post-28-July Boluarte prosecutorial-trajectory question. The Justicia Minister's institutional posture vis-à-vis the Fiscalía, the Tribunal Constitucional, and the Sala Penal Especial of the Corte Suprema establishes the new administration's signalling on the protest-period accountability question and on the broader rule-of-law trajectory. The Relaciones Exteriores Minister portfolio establishes the new administration's foreign-policy posture vis-à-vis the United States, China (with the Chancay Megaport now operational and the China–Peru bilateral relationship at peak intensity — see PE-F-01), the Pacific Alliance, the Andean Community, and the broader Latin American institutional architecture. The specialised portfolios (Educación, Salud, Trabajo, Agricultura, Energía y Minas, Ambiente, Cultura) follow the standard pattern of partisan-coalitional distribution with technocratic-competence overlay.

The 2026 cycle's complete cabinet [TBD-VERIFY: the full Council of Ministers as announced ahead of the 28 July inauguration] structured the new administration's policy direction and the early-period governance trajectory.

7. The 28 July 2026 Bicentenario Transition — Dual Ceremony and the End of the Boluarte Period

7.1 The Bicentenario Commemorative Context

The 28 July 2026 transition coincides exactly with the 200-year anniversary of José de San Martín's Proclamación de la Independencia del Perú on 28 July 1821 in the Plaza de Armas of Lima. The bicentennial commemoration — organised by the Comisión del Bicentenario del Perú, established by Decreto Supremo under the [TBD-VERIFY: the original Bicentenario Commission was established 2010 under García and was successively reconstituted; the current 2025–2026 reconstitution operates under Decreto Supremo of the Boluarte administration with a specific commemorative-events calendar] — has structured the Programa Oficial del Bicentenario through 2025 and 2026, with successive commemorative events including: the Año del Bicentenario declaration; the publication-and-research programme on Peruvian independence-era history (with major historical works by Carmen McEvoy, José Antonio del Busto, Heraclio Bonilla, and others); the infrastructural inaugurations dated to coincide with the bicentennial calendar (the Chancay Megaport opened in November 2024 under the broader bicentennial-development framework, see PE-F-01); the commemorative-coin and bicentennial-medal programme; and the international-relations programme inviting foreign heads of state and dignitaries to participate in the 28 July 2026 ceremonies.

The structural-symbolic significance — that the post-Boluarte transition coincides with the bicentenary, that the new President takes the oath on the institutional ceremony date of the 1821 Proclamación, and that the bicameral architecture restored by Ley No. 32101 is itself a return to the pre-1993 institutional tradition — is widely commented in El Comercio, La República, Caretas, and academic commentary (Vergara, McEvoy, Cotler-tradition historiography). The historiographical reading is that the post-Castillo / post-Boluarte transition lies on the seam between Peru's first and second century as an independent republic, and that the institutional configuration the 2026 election produces will define the early decades of the second century.

7.2 The Standard Inauguration Protocol

The standard Peruvian inauguration protocol consists of four institutional events on 28 July, structured by the Reglamento de Protocolo Presidencial of the Cancillería and the Reglamento del Congreso of the Congressional secretariat. The protocol elements proceed as follows:

• 08:00–10:00: The Ofrenda Floral at the Monumento a San Martín in the Plaza San Martín of Lima, with the outgoing and incoming Presidents, the Council of Ministers, the diplomatic corps, and the principal civic dignitaries.
• 10:30–12:30: The joint session of the bicameral Congress in the Palacio Legislativo, with the President-elect's juramentación presidencial (presidential oath of office) administered by the President of the Senate or the President of the Chamber of Deputies (the inter-chamber protocol coordination establishes the specific procedure for the bicameral case). The Vice-Presidents-elect are sworn in subsequently. The new bicameral Congress is simultaneously inaugurated, with the Senate's Mesa Directiva and the Chamber's Mesa Directiva established for the first legislative period.
• 13:00–14:00: The President's Mensaje a la Nación speech from the atril of the Palacio Legislativo, traditionally the moment at which the incoming President signals the principal policy directions of the new administration. The speech is broadcast live by the principal television networks (América Televisión, Latina, ATV, TV Perú, Willax, Panamericana, plus the public-broadcaster TV Perú) and the radio networks (RPP, Radio Capital, Exitosa, Radio Programas del Perú); social-media live-streaming via the Presidencia de la República's official channels. The 2026 Mensaje a la Nación [TBD-VERIFY: the specific content of the inaugural speech, the principal policy commitments announced, the cabinet-confirmation references, and the bicentennial-commemoration framing] established the new administration's opening policy posture.
• 15:00–17:00: The traspaso de la banda presidencial (transfer of the presidential sash) on the Plaza Mayor, with the outgoing President formally transferring the banda to the new President, followed by the Te Deum at the Catedral de Lima with the Cardinal Archbishop of Lima officiating. The post-ceremony schedule includes the formal departure of the outgoing President (Boluarte) from the Palacio de Gobierno and the formal entry of the new President.

7.3 The Bicentennial Augmentation

The 2026 inauguration's bicentennial augmentation [TBD-VERIFY: the specific Programa Oficial sequence] added commemorative elements to the standard inauguration sequence. The expected augmentations include: (a) the Gran Parada Militar del Bicentenario on the broader 28–29 July 2026 ceremonial window, with augmented Armed Forces participation and visiting-military-units from the principal Latin American counterparts (Chile, Colombia, Ecuador, Bolivia, Argentina, Brazil); (b) the inauguration of bicentennial-commemorative infrastructure projects, possibly including the Museo del Bicentenario if its construction reached completion; (c) the bicentennial-medal awards to figures of national-historical significance (typically including academics, civic figures, and Armed Forces senior officers); (d) the international-relations programme of foreign-head-of-state visits, with expected attendance from the Latin American presidents (Argentina, Chile, Colombia, Ecuador, Bolivia, Brazil, Mexico — with attendance conditional on diplomatic-relations status; Peru–Mexico relations have been strained since the December 2022 Castillo period and may not yield a Mexican attendance), the United States (likely at Secretary of State or Vice-Presidential level), the European Union, and selected Asian counterparts (China, Japan, South Korea — with attendance conditional on bilateral-relations status).

7.4 The Boluarte Exit — The Final Hours

The 28 July 2026 transition is the formal end of the Dina Boluarte Zegarra presidency. The Boluarte exit sequence proceeded under the standard protocol: the traspaso de la banda presidencial at the Plaza Mayor formally transferred executive authority; Boluarte's formal departure from the Palacio de Gobierno followed; her constitutional immunity under Article 117 ceased at the moment of the juramentación of the new President. The post-Boluarte legal-exposure trajectory — the immediate re-opening of the Caso Rolex, Caso Cofopri, Caso Cirugía Estética, and successor cases under the standard prosecutorial-transfer protocol — proceeded on the standard calendar (detailed in Section 9 below).

The Boluarte post-presidency residential and security-arrangements [TBD-VERIFY: the specific arrangements for the outgoing President's residence, security protection, and pension; the standard Peruvian post-presidential framework provides residential and security support for outgoing Presidents but with the Caso Rolex prosecutorial trajectory potentially altering this configuration] structured the public-visibility profile of the outgoing President in the immediate post-transition period. The standard pattern of post-presidential public posture in modern Peru — Toledo's voluntary departure to the United States with subsequent extradition; García's ongoing residency in Lima with the 2019 suicide; Humala's residence in Lima with the post-2017 prosecution; Kuczynski's residence in Lima with the post-2018 prosecution; Vizcarra's post-2020 prosecution culminating in the November 2025 first-instance conviction and imprisonment; Sagasti's quiet retirement; Castillo's continuing detention — establishes that the Boluarte post-presidency trajectory is structurally determined by the legal-exposure trajectory more than by the President's individual preferences.

7.5 The Symbolic Closing

The closing symbolic moment of the 28 July 2026 transition — the final Te Deum at the Catedral de Lima and the formal entry of the new President to the Palacio de Gobierno — discharges the post-7-December-2022 institutional period. The Castillo autogolpe attempt of 7 December 2022, the Boluarte ascension to the presidency on the same day, the December 2022 – April 2023 protest period that produced 49+ deaths (mostly in Andean rural regions), the Caso Rolex exposure of 18 March 2024, the Caso Cofopri exposure of 2025, the sustained Boluarte approval below 8 per cent across the 2023–2026 period, the 2025 cabinet rotation under Adrianzén — the full institutional sequence that PE-D-02 through PE-D-07 detail — closes with the 28 July 2026 juramentación. The post-Castillo / post-Boluarte era opens with the new President's inaugural moment.

8. The 2026–2031 Governing Arithmetic — Coalitional Logic Under the Restored Bicameralism

8.1 The Structural Constraint

The 2026–2031 governing arithmetic operates under three simultaneous structural constraints. First, the Effective Number of Parties exceeding 7 in both chambers, which precludes single-party majority and requires multi-party coalition-building. Second, the partisan fragmentation across ideological clusters, which means that no coalition can be assembled purely within one ideological family (e.g., a pure right-of-centre coalition reaching simple majority requires Fuerza Popular + Renovación Popular + APP + Acción Popular + Avanza País + Somos Perú simultaneously aligned, an unstable configuration). Third, the inter-chamber coordination requirement, which means that any working majority must simultaneously hold in the Senate and the Chamber of Deputies — a condition that the parallel preferential-vote elections of 12 April 2026 produced asymmetrically across the two chambers given the differing constituency structures (the Senate's 30 distrito único nacional seats favouring national-figure candidates; the Chamber's purely departmental seats favouring local-base candidates).

The structural constraint is reinforced by Peru's transfuguismo (party-switching) baseline: through the 2021–2026 unicameral legislature, transfuguismo exceeded 25 per cent of seated deputies — meaning that more than one in four deputies switched party affiliation during their five-year term. The post-2024 implementing statutes attempted to reduce transfuguismo through institutional disincentives [TBD-VERIFY: the specific anti-transfuguismo provisions in the post-2024 LOP amendments], but the empirical pattern suggests that the disincentives have been insufficient. Under the 2026–2031 bicameral architecture, transfuguismo in either chamber alters the coalitional arithmetic dynamically, with the new President's coalition required to absorb post-electoral defections from rival blocs while preserving its own bloc-discipline.

8.2 The Voto de Investidura — First Structural Test

The first structural test of the new President's coalitional arithmetic is the voto de investidura requirement under the modified Article 130. Within 30 days of taking office (by approximately 27 August 2026), the new Prime Minister presents the Council's policy programme to the Chamber of Deputies and requests a vote of confidence. The simple-majority threshold is 66 of 130; under bicameral practice, the Senate does not vote on the investiture but may issue advisory communications. A successful investiture demonstrates a working majority in the Chamber and signals the policy direction the Chamber is prepared to support; a failed investiture produces immediate constitutional consequences (the President must either replace the Prime Minister or, in the second failure under Article 134, dissolve the Chamber and call new elections).

The 2026 voto de investidura sequence [TBD-VERIFY: the specific date of the new Prime Minister's presentation, the policy-programme content, and the Chamber vote] establishes the principal early indicator of the new period's institutional dynamics. The structural expectation, based on the projected seat distribution and the right-of-centre cluster's aggregate share approaching but not exceeding 50 per cent of the Chamber, is that the new Prime Minister will require either a cross-bloc alliance (Fuerza Popular + APP + Acción Popular + Avanza País + Somos Perú, in some configuration, with the President's own party as the anchor) or partial defection from the post-Castillo left or the ANTAURO bloc. The investiture-coalition formation is the first structural exercise of the post-28-July governing arithmetic.

8.3 The First Hundred Days — Sectoral Policy Sequence

The first hundred days of the new administration (28 July 2026 – early November 2026) are structured by the sectoral-policy sequence that the new Cabinet executes. The principal policy fronts include:

• Security policy: The continuation or modification of the estado de emergencia declarations under Article 137; the PNP and Armed Forces deployment configuration; the Ley contra la Criminalidad Organizada implementation framework; the homicide-rate response in La Libertad, Lima Metropolitan, Lambayeque, and Tacna; the Tren de Aragua, Los Pulpos, La Jauría, Los Gallegos, Compadres, and Los Plataneros organised-crime response. The 2026 cycle's security signalling [TBD-VERIFY: the specific security-policy framework announced by the new Interior Minister and the Defensa Minister] established the early direction.
• Fiscal and macroeconomic policy: The continuation of the BCRP independence framework; the MEF's Marco Macroeconómico Multianual 2027–2030 projected for August 2026 release; the 2027 budget cycle with the Ley de Presupuesto del Sector Público para el Año Fiscal 2027 draft submitted by the executive in late August or early September 2026 and approved by the bicameral Congress by 30 November 2026; the BCRP reference-rate trajectory and the sol exchange-rate stability. The continuity-versus-rupture question (Section 6.3) was definitively resolved during this period.
• Foreign policy: The new administration's posture vis-à-vis the United States (with the Trump-2 administration in its third year), China (with the Chancay Megaport operational and the bilateral relationship at peak intensity), the Pacific Alliance, the Andean Community, and the broader Latin American institutional architecture. The principal early-period foreign-policy events include the UN General Assembly speech in late September 2026, the APEC summit attendance (Peru hosted APEC in November 2024 under Boluarte; the 2026 summit was in [TBD-VERIFY: the host country and the dates]), and the principal bilateral meetings.
• Institutional policy: The Senate's institutional self-construction (the Reglamento del Senado, the Mesa Directiva elections, the Standing Committees constitution); the inter-chamber coordination mechanisms; the Comisión Bicameral de Conciliación establishment; the Tribunal Constitucional and Junta Nacional de Justicia appointment cycles (with the Senate's exclusive function operationalising for the first time).
• Boluarte legal-trajectory policy: The post-28-July prosecutorial-transfer protocols; the new Justicia Minister's institutional posture vis-à-vis the Fiscalía; the Tribunal Constitucional's posture on the Caso Rolex constitutional questions; the broader rule-of-law signalling.

8.4 The 2027 Cycle — The Second-Year Pattern

The 2027 cycle — the first full year of the new administration — establishes whether the post-28-July governing arithmetic stabilises or enters a vacancia / moción-de-censura cycle. The empirical Peruvian pattern since 2016 has been that vacancia and moción threats emerge in the second year of new administrations (Kuczynski's first vacancia motion in December 2017, 17 months after July 2016 inauguration; Vizcarra's first vacancia attempt in September 2020, 25 months after March 2018 succession; Castillo's first moción de censura in October 2021, three months after July 2021 inauguration; Boluarte's first vacancia motion in early 2024, 13 months after December 2022 succession). The 2027 cycle's vacancia / moción trajectory [TBD-VERIFY: forward question dependent on the early-period governance trajectory] will indicate whether the bicameralism reform produces moderation or reproduces the post-2016 instability cycle.

8.5 The 2028–2031 Trajectory

The 2028–2031 trajectory is structured by three forward variables. First, the Castillo trial conclusion (expected mid-to-late 2026) and its post-verdict political effects on the Castillo-line residual vote. Second, the Boluarte post-presidency legal trajectory (Section 9 below) and its effects on the broader accountability discourse. Third, the economic-cycle exposure: the post-2025 copper-price trajectory, the global-trade exposure to the Trump-2 tariff cycle, and the structural inflation question if external shocks materialise. The new administration's response to these three forward variables — in conjunction with the security-crisis trajectory and the bicameral institutional dynamics — will determine whether the 2031 cycle takes place under conditions of consolidated bicameral governance or under conditions of a new institutional rupture.

9. The Boluarte Post-Presidency Trajectory and the Article-117 Immunity Cessation

9.1 The Article-117 Framework

Article 117 of the 1993 Constitution establishes the constitutional immunity of the President during the term of office. The Article reads: "El Presidente de la República sólo puede ser acusado, durante su período, por traición a la patria; por impedir las elecciones presidenciales, parlamentarias, regionales o municipales; por disolver el Congreso, salvo en los casos previstos en el artículo 134 de la Constitución, y por impedir su reunión o funcionamiento, o los del Jurado Nacional de Elecciones y otros organismos del sistema electoral." The immunity is interpreted by the Tribunal Constitucional and by the Fiscalía's standard practice as covering all other criminal-investigation matters during the presidential term, with prosecutorial preparation permitted (the requerimiento de prisión preventiva in the Caso Rolex was technically a preparatory motion under this framework) but formal indictment and trial proceedings deferred until post-term.

Article 117 immunity ceases at the moment of the new President's juramentación on 28 July 2026. The outgoing President — Dina Boluarte Zegarra — passes from constitutional immunity to ordinary criminal-jurisdiction status at that moment, with the principal Fiscalía investigations re-opening immediately on the standard prosecutorial calendar.

9.2 The Multi-Track Investigation Re-Opening

The principal Boluarte investigations re-opening on 28 July 2026 include:

• The Caso Rolex: Opened 18 March 2024 by the Fiscalía under Patricia Benavides and her successor Delia Espinoza, centred on undisclosed receipt of luxury Rolex watches from third parties and the broader patrimonial-disclosure violations. The requerimiento de prisión preventiva was filed in 2024 but processing was held under Article 117 immunity; the constitutional-accusation referral was filed with the Subcomisión de Acusaciones Constitucionales but did not advance to vacancia. The post-28-July re-opening proceeds with the prisión preventiva hearing under the Sala Penal Especial of the Corte Suprema [TBD-VERIFY: the specific judicial body with jurisdiction post-28-July, depending on whether Boluarte retains the constitutional-accusation procedural channel or shifts to ordinary criminal-jurisdiction], the formal acusación fiscal (formal indictment) sequence, and the standard pre-trial procedural phases.
• The Caso Cofopri: Opened 2025, centred on alleged irregularities during Boluarte's prior 2021–2022 tenure as Minister of Development and Social Inclusion, with Cofopri operating under MIDIS sectoral coordination. The investigation has advanced through the preliminary phase and through Subcomisión review; the post-28-July phase proceeds with the formal investigation-and-indictment sequence.
• The Caso Cirugía Estética: Opened 2024 on allegations of undisclosed presidential absences for cosmetic surgery during the Caso Rolex search-of-residence window. The Subcomisión declined to advance the constitutional-accusation. The post-28-July phase is structurally less acute than the Rolex and Cofopri tracks but remains an open file.
• The protest-period accountability question: The December 2022 – April 2023 protest casualties (49+ deaths, mostly in Andean rural regions; PE-D-03) remain under Fiscalía investigation, with the Caso Ayacucho, Caso Apurímac, and Caso Juliaca tracks principally focused on the role of the Armed Forces and PNP and on the chain-of-command responsibility. Boluarte's command responsibility as Commander-in-Chief during the protest period is the subject of Coordinadora Nacional de Derechos Humanos (CNDDHH), Inter-American Commission on Human Rights (IACHR), and Office of the United Nations High Commissioner for Human Rights (OHCHR) communications. The post-28-July sequence may produce a formal Fiscalía indictment on the protest-casualty track [TBD-VERIFY: the specific prosecutorial trajectory of the protest-casualty cases against Boluarte].

9.3 The Comparative Outgoing-President Trajectory

The Boluarte post-presidency trajectory is the most-acute outgoing-President legal-exposure trajectory since Pedro Pablo Kuczynski (resigned March 2018, prosecuted thereafter on Lava Jato Odebrecht-related charges; prisión preventiva in April 2019 with subsequent house arrest; case ongoing as of 2026) and Alejandro Toledo (extradited from the United States in April 2023, convicted in October 2024 on Odebrecht-related charges with a 20-year-6-month sentence; serving in Lima's Penal de Barbadillo alongside Fujimori and Castillo). Vizcarra (vacated November 2020; convicted at first instance on 26 November 2025 in the Lomas de Ilo / Hospital de Moquegua bribery case and sentenced to 14 years, with appeal pending as of 2026; the Caso Vacunagate and other tracks proceeding separately) and Castillo (in detention since 7 December 2022; trial opened 4 March 2025 on rebellion and related charges; sentence expected in mid-to-late 2026) provide the more-recent reference points.

The Boluarte trajectory is structurally distinct from each of these comparators in three dimensions. First, the breadth of the investigation portfolio (multiple parallel tracks rather than a single principal case). Second, the political-coalitional weakness of the Boluarte post-presidency (no significant residual partisan structure; the Boluarte–Adrianzén coalition was a Congressional-arithmetic coalition rather than a party-organisational coalition, and post-28-July it dissolves). Third, the specific personal-enrichment frame of the Caso Rolex and Caso Cofopri tracks (compared to the Lava-Jato-style transactional-corruption frame of the Toledo / García / Humala / Kuczynski cases). The forward question — whether the trajectory produces prisión preventiva, formal indictment, oral-trial phase, and eventual conviction on the timeline that ultimately reached Vizcarra (first-instance conviction in November 2025, five years after his vacancy), or settles into prolonged procedural delay — is the institutional centrepiece of the post-transition accountability debate.

9.4 The Tribunal Constitucional Posture and the Constitutional-Accusation Procedure

The Tribunal Constitucional's posture on the post-28-July Boluarte prosecution sequence [TBD-VERIFY: the specific TC composition as of 2026 and its likely procedural posture] is the principal institutional variable affecting the trajectory. The TC under the post-2022 composition has issued multiple rulings interpreting the Article 117 immunity framework, the vacancia threshold, and the constitutional-accusation procedure; the post-28-July rulings will determine whether the standard ordinary-criminal-jurisdiction applies or whether residual constitutional-accusation procedural protections apply.

The constitutional-accusation procedure under Article 99 — modified by Ley No. 32101 to assign the accusatory phase to the Chamber of Deputies and the trial phase to the Senate — applies to former Presidents under the standard interpretation. Whether the Boluarte cases proceed through the Article-99 channel (with the Chamber's accusatory vote and the Senate's trial-phase responsibility) or shift to ordinary criminal jurisdiction (with the Sala Penal Especial of the Corte Suprema or the equivalent court directly responsible) is the principal procedural question of the post-28-July period. The standard interpretation since the 2009 Fujimori case has been that the constitutional-accusation procedure applies during the term and for matters falling under the delitos de función category, while ordinary criminal jurisdiction applies for matters outside that category — but the boundary between these two categories is interpretatively contested.

9.5 The Boluarte Personal-Posture Forward Question

The Boluarte personal-posture forward question — whether she remains in Lima and confronts the prosecutorial trajectory, departs voluntarily for a jurisdiction without extradition treaty (the Toledo precedent of 2018–2023 in the United States demonstrated that extradition treaties function effectively, but the precedent of seeking asylum in a non-extradition jurisdiction remains theoretical), seeks asylum in a sympathetic Latin American government (Mexico, Venezuela, or another bolivariano-aligned state, given Peru's strained diplomatic relations with Mexico since the December 2022 Castillo period), or otherwise structures her post-presidency — is the principal personal-decisional variable. The expected pattern, based on Boluarte's prior public posture and on the institutional constraints, is that she remains in Lima and confronts the prosecutorial trajectory through the standard procedural channels [TBD-VERIFY: the specific Boluarte personal-posture forward decision].

10. Three-Account Synthesis and the Forward View to 2031

10.1 The Legitimacy-Restoration Reading

The legitimacy-restoration reading — held by the incoming administration, the Boluarte-aligned Congressional bloc (in its closing posture), segments of the Lima business establishment, Wilson Center / Inter-American Dialogue mainstream commentary, and selected academic voices including Pedro Cateriano, Lourdes Flores Nano, and Carmen McEvoy — emphasises that the 7 June 2026 runoff and the 28 July 2026 Bicentenario transition restore democratic legitimacy through a regularly-scheduled electoral cycle. The principal points of the reading:

• Procedural regularity: The 2026 cycle proceeded under the JNE's Cronograma Electoral on schedule, with the institutional architecture (JNE, ONPE, RENIEC) operational and the electoral calendar undisrupted. The post-7-December-2022 institutional period is discharged through this regular procedural sequence.
• Bicameralism activation: The Ley No. 32101 bicameral architecture comes into operational force on 28 July 2026, creating new deliberative space and restoring the pre-1993 institutional tradition.
• Mandate transition: The new President's mandate, however weak in absolute first-round terms, is constituted through the standard two-round process and confers full constitutional authority for the 2026–2031 term.
• Macroeconomic continuity: The BCRP independence framework, the MEF technocratic-orthodoxy framework, and the broader macroeconomic-stability architecture proceed without rupture.
• Bicentennial framing: The 28 July 2026 transition coincides with the 200-year anniversary of independence and frames the new administration as the opening of Peru's second century as a republic.

10.2 The Fragmented-Mandate Reading

The fragmented-mandate reading — held by the Inter-American Commission on Human Rights (IACHR), the Coordinadora Nacional de Derechos Humanos (CNDDHH), the Instituto de Democracia y Derechos Humanos de la Pontificia Universidad Católica del Perú (IDEHPUCP), Asociación Civil Transparencia, the Castillo-line opposition, Verónika Mendoza and the Juntos por el Perú leadership, and segments of La República editorial — emphasises that the runoff winner's mandate is structurally weak and that the post-7-December-2022 accountability deficit remains unaddressed. The principal points of the reading:

• Low first-round floor: The combined first-round support of the two runoff qualifiers projected at 25–30 per cent of valid votes constitutes the weakest electoral floor of any post-2000 Peruvian second-round contest. The runoff winner enters office without a substantive plurality mandate.
• Protest-period accountability: The December 2022 – April 2023 protest casualties (49+ deaths) remain without prosecutorial conclusion. The CNDDHH and IACHR communications throughout the 2024–2026 period emphasised that the accountability deficit persists and that the post-28-July incoming administration inherits an unresolved human-rights crisis.
• Boluarte personal-enrichment pattern: The Caso Rolex and Caso Cofopri investigations establish a personal-enrichment pattern at the highest level of the outgoing administration. The post-28-July prosecutorial trajectory will determine whether this pattern is structurally addressed or settled into the impunity baseline.
• Bicameralism as self-protective reform: The November 2024 Ley No. 32101 — passed by a Congress with single-digit public approval and without referendum — is read as a self-protective institutional reform rather than as a genuine deliberative-moderation measure. The reform's principal effect is read as the restoration of immediate Congressional re-election and the rollback of the 2018-Vizcarra-referendum institutional package, rather than as a genuine bicameral-deliberation framework.
• Continued fragmentation: The 2026 Congressional fragmentation (ENP > 7 in both chambers) reproduces the post-2016 instability pattern and predicts continued vacancia / moción dynamics through the 2026–2031 term.

10.3 The Structural-Impasse-Persistence Reading

The structural-impasse-persistence reading — held by Alberto Vergara, Steven Levitsky, Carlos Meléndez, Paula Muñoz, Eduardo Dargent, Martín Tanaka, and Mauricio Zavaleta — emphasises that the 7 June 2026 runoff and the 28 July 2026 transition are manifestations rather than causes of the deeper post-2000 Peruvian presidential-system instability. The principal points of the reading:

• Structural party-system weakness: The Peruvian party system has been structurally weak since the late-1990s collapse of the traditional parties (APRA, Acción Popular, Partido Popular Cristiano), and no subsequent reform — including the 1993 Constitution itself, the 2003 LOP, the 2015 Ley contra la Reelección Inmediata, the 2018 Vizcarra referendum, the 2024 Ley No. 32101 — has reversed the structural fragmentation. The 2026 cycle's ENP > 7 in both chambers is the structural baseline.
• Presidentialism without coalitional capacity: Peru's presidential system, structurally inherited from the 19th-century institutional tradition and codified in the 1979 and 1993 Constitutions, lacks the coalitional-formation mechanisms that comparable presidential systems (Brazil's coalitional presidentialism, Chile's presidentialism-with-strong-parties, Mexico's PRI-era hegemonic presidentialism) developed. The result is the vacancia / cuestión-de-confianza cycle that has produced six Presidents in six years.
• Bicameralism as procedural moderation without substantive change: The bicameralism reform, while consistent with the Tsebelis veto-players logic of adding institutional delay, does not introduce the moderating effect that the reform's defenders hoped because the same partisan organisations compete in both chambers with the same fragmenting incentives. The Senate may slow legislation but does not produce qualitative-policy moderation.
• The Castillo–Boluarte sequence as instability manifestation: The 7 December 2022 Castillo autogolpe attempt, the Boluarte ascension and 2023–2026 presidency, the Caso Rolex and successor cases, the protest-period casualties, the security-crisis intensification — the full institutional sequence is read as the manifestation of structural instability rather than as anomalous events.
• The 2026 election as continuity-with-fragmentation: The 2026 cycle, in this reading, continues the post-2000 pattern rather than constituting a structural break. The new President's principal challenge is not the electoral mandate (which is structurally weak by design) but the post-28-July coalitional-arithmetic question and the inherited security and accountability crises.

10.4 The Three-Account Discipline

The corpus does not arbitrate among the three readings. Each is internally consistent; each is supported by specific empirical evidence; each captures aspects of the post-Boluarte transition that the other readings underweight. The legitimacy-restoration reading captures the procedural-regularity dimension that the fragmented-mandate and structural-impasse readings underweight; the fragmented-mandate reading captures the accountability-deficit dimension that the legitimacy-restoration reading underweights; the structural-impasse reading captures the long-arc institutional-pattern that the other readings underweight. The reader is left to weigh these readings against their own analytical framework.

10.5 The Forward View to 2031

The forward view from the 28 July 2026 inauguration to the next regular electoral cycle in 2031 is structured by five open questions. The questions, in the order their resolution is likely to become visible:

1. The first-100-days cabinet trajectory (28 July 2026 – November 2026): Whether the new President executes a stable cabinet through the early period or faces the rapid-rotation pattern of prior post-2016 administrations. The first voto de investidura in late August 2026 is the principal early indicator; the first cabinet adjustment (if any) by November 2026 establishes the rotation pattern.

2. The Castillo trial conclusion (mid-to-late 2026): The Sala Penal Especial verdict and sentence — with the Fiscalía requesting 34 years' imprisonment — establish the formal accountability outcome for the 7 December 2022 autogolpe. The political consequences for the residual Castillo-line vote and for the protest-period accountability question follow.

3. The Boluarte post-presidency legal trajectory (post-28 July 2026): Whether the Caso Rolex, Caso Cofopri, Caso Cirugía Estética, and successor cases produce prisión preventiva, formal indictment, and trial, or settle into the structural-impunity pattern. The first major prosecutorial step in the 30–90 days post-28-July is the principal early indicator.

4. The security-crisis trajectory (2026–2028): Whether the new government can move from emergency-decree to structural institutional control, whether the Tren de Aragua and domestic-extortion configurations can be reversed, and whether the homicide-rate trajectory through 2027–2028 stabilises or worsens. The INEI Estadísticas de Seguridad Ciudadana reports through 2027–2028 will provide the empirical measure.

5. The bicameral Congressional dynamics (2026–2031): Whether the Senate operates as a deliberative-moderating veto-player or reproduces Chamber-of-Deputies fragmentation, whether vacancia attempts emerge against the new President in the early period, and whether the moción de censura cycle stabilises or accelerates. The first session (28 July 2026 – December 2026) and the legislatura ordinaria of 2027 are the principal observation windows.

The answers will define the Peruvian post-Castillo / post-Boluarte period for the next political generation. The 2031 cycle — whose pre-campaign period will begin in late 2029 or 2030 — will take place either under conditions of consolidated bicameral governance (suggesting that the reform's defenders' hopes were vindicated) or under conditions of a new institutional rupture (suggesting that the structural-impasse reading was vindicated). The corpus will track this trajectory through successive document updates and the 2031-cycle anchor documents to be drafted in the late-2020s.

11. Conclusion — The Post-Castillo / Post-Boluarte Era Opens

The 7 June 2026 second-round runoff and the 28 July 2026 Bicentenario transition close the post-7-December-2022 institutional period in Peru and open the post-Castillo / post-Boluarte era. The structural fact of the period: a President emerging from the most fragmented first round in modern Peruvian electoral history (combined first-round support of the two runoff qualifiers projected at 25–30 per cent of valid votes); the first bicameral Congress since the 1992 autogolpe dissolution, with an Effective Number of Parties exceeding 7 in both chambers; an outgoing President (Dina Boluarte Zegarra) facing multiple parallel criminal investigations whose Article-117 immunity ceases at the moment of the new President's juramentación; an ongoing security crisis with national homicide rate at 8.4 per 100,000 and continuing organised-crime consolidation; a continuing Castillo trial with sentence expected in mid-to-late 2026; a continuing protest-period accountability deficit; and a Bicentenario commemorative frame that loads the inauguration with the 200-year arc of Peruvian republican history.

The corpus does not predict the 2026–2031 trajectory. It documents the structural conditions, the institutional architecture, the coalitional arithmetic, and the principal forward variables that will determine the trajectory. The three-account discipline — the legitimacy-restoration reading, the fragmented-mandate reading, and the structural-impasse-persistence reading — captures the principal interpretive currents through which the period is being read by Peruvian and international analytical communities. The reader is left to weigh these readings against their own analytical framework and to track the trajectory through the successive document updates that the corpus will produce.

The 28 July 2026 juramentación presidencial of the post-Boluarte President — on the 200-year anniversary of San Martín's Proclamación de la Independencia of 28 July 1821 — closes the post-7-December-2022 period and opens the post-Castillo / post-Boluarte era. The institutional architecture restored by Ley No. 32101, the coalitional arithmetic produced by the 12 April 2026 first round and confirmed by the 7 June 2026 runoff, and the forward variables that will define the 2026–2031 governance period — these together constitute the structural inheritance of the next political generation of Peruvian governance. The corpus will track the trajectory as it unfolds.

12. Postscript (Added 2026-08-29) — The Verified Record and the Correction of the Boluarte-to-Fujimori Transition Frame

This document was drafted in the run-up to the 7 June 2026 runoff and, throughout Sections 1–11, treats Dina Boluarte Zegarra as the outgoing President who would hand executive authority to the President-elect on 28 July 2026. That working assumption is incorrect. Verified reporting (evidence tier: search-retrieved, cross-corroborated across independent outlets; WebFetch to primary JNE/ONPE/El Peruano sources was blocked in this research pass by the operating environment's network policy) establishes that Peru had two further presidential transitions between this document's drafting and the 28 July 2026 inauguration, and that Boluarte was not in office for any of the events narrated in §§2–11 above.

The corrected presidential sequence. Dina Boluarte was removed by Congress on 10 October 2025 — roughly eight months before the runoff this document describes — after a gunman opened fire during a concert by the cumbia band Agua Marina in Lima, injuring five people, in what was widely read as the breaking point after a sustained wave of extortion-driven attacks on musicians and small businesses. INEI figures cited in contemporaneous reporting recorded 6,041 homicides between January and mid-August 2025 (the highest for that period since 2017) and a 28 per cent year-on-year rise in extortion complaints. Congress accepted four moción de vacancia requests, Boluarte did not appear when summoned to defend herself shortly before midnight on 9–10 October, and the unicameral Congress voted (reported as 124 in favour with no votes against, in a 130-member chamber) just after midnight to remove her under Article 113 of the 1993 Constitution ("permanent moral incapacity") — making her the fifth Peruvian President removed by this mechanism, after Billinghurst (1914), Fujimori (2000), Vizcarra (2020), and Castillo (2022) [TBD-VERIFY: pending primary-source fetch against the Congressional Resolución Legislativa; search-corroborated via NPR, Al Jazeera, Britannica, OPB, and CBS News reporting of 10 October 2025]. José Enrique Jerí Oré, then President of Congress (age 38), was sworn in the same night as interim President to complete the remainder of the constitutional term, Boluarte having no sitting Vice-Presidents.

Jerí's own presidency lasted a little over four months. On 17–18 February 2026, Congress voted (reported 75 in favour, 24 against, 3 abstentions) to remove him as well, in the scandal Peruvian press dubbed "Chifagate": undisclosed meetings in late December 2025 and early January 2026 with two Chinese businessmen (named in reporting as Zhihua Yang and Ji Wu Xiaodong), one holding active state contracts and the other under investigation for illegal logging. Jerí denied wrongdoing, saying the meetings concerned organising a Peruvian-Chinese cultural event [TBD-VERIFY: pending primary-source fetch; search-corroborated via JURIST, WLRN, PBS NewsHour, and Al Jazeera reporting of 17–18 February 2026]. Congress then elected José María Balcázar — an 83-year-old former judge affiliated with the leftist Perú Libre party, at that point President of Congress — as the next interim President on 18 February 2026, over three rival candidates. Balcázar pledged that the 12 April 2026 general election would be conducted so its result was "unquestionable" and that macroeconomic and monetary policy would not change. It was therefore Balcázar, not Boluarte, who presided over the 12 April 2026 first round, the ensuing post-electoral crisis (below), the 7 June 2026 runoff, and the transfer of executive authority to Keiko Fujimori on 28 July 2026 [TBD-VERIFY: pending primary-source fetch; search-corroborated via OPB, NPR/Houston Public Media, Connecticut Public, and Dentons legal-alert coverage].

A direct implication: the September 2025 cabinet reshuffle, the November 2025 Constituyente rejection, and the December 2025 antejuicio sequence narrated as continuing Boluarte-government events in PE-D-07 §§4–6 could not have occurred as described, since Boluarte left office on 10 October 2025 — see the correction and sourcing at PE-D-07 §12. Readers should treat PE-D-06 §§2–14 and PE-D-08 §§1–11 above as this document's original prospective analysis of the institutional architecture (which remains useful for the bicameral mechanics, the tachas process, and the candidate typology), superseded on matters of who held the Presidency and when by this section and by PE-D-07 §12.

The first round and the post-electoral crisis (12 April – ~15 May 2026). The 12 April 2026 first round was extended into a second voting day after the Oficina Nacional de Procesos Electorales was late distributing electoral materials to Lima voting centres. The record field — reported at 36 presidential candidacies, the most fragmented in modern Peruvian electoral history — produced a first-round result of Fujimori (Fuerza Popular) at approximately 17.2 per cent, Sánchez (Juntos por el Perú) at approximately 12.0 per cent, and Rafael López Aliaga (Renovación Popular, the sitting Mayor of Lima) at approximately 11.9 per cent — a gap of roughly 13,000 votes between second and third place at one late count [TBD-VERIFY: pending primary-source fetch; search-corroborated via U.S. News, Al Jazeera, and Rio Times]. López Aliaga alleged fraud and called for mass mobilisation against the count without presenting supporting evidence; domestic and international election observers rejected the claims, and he was subsequently criminally charged over incitement of civil disorder. Full certification did not complete until 14–15 May 2026, compressing the second-round campaign calendar analysed in §3 above. English-language secondary sources catalogue this month-long episode as the "2026 Peruvian post-electoral crisis" — a candidate subject for a future PE-D or PE-J corpus document [TBD-VERIFY: pending primary-source fetch; search-corroborated via JURIST, World Politics Review, Rio Times, and LatinAmerican Post].

Congressional composition (12 April 2026 result, seated 28 July 2026). Reported seat allocations — materially different from the six-to-seven-bloc projection this document's §5 anticipated, and reflecting the late-breaking strength of three vehicles not previously prominent in the corpus's candidate typology — are: Senate (60 seats): Fuerza Popular (FP) 22, Juntos por el Perú (JP) 14, Renovación Popular (RP) 8, Partido del Buen Gobierno (PBG, the technocratic vehicle of engineer-academic Jorge Nieto Montesinos, who took roughly 11 per cent in the first round) 7, Partido Cívico Obras (OBRAS, broadcaster Ricardo Belmont's vehicle, roughly 10 per cent) 5, Ahora Nación (AN, economist Alfonso López-Chau's social-democratic vehicle) 4. Chamber of Deputies (130 seats): FP 39, JP 31, PBG 18, RP 16, OBRAS 15, AN 11 [TBD-VERIFY: pending primary-source fetch against the JNE Acta de Proclamación and IPU Parline data; search-corroborated seat tallies not independently verified against a single primary tabulation this pass]. No senatorial or deputy representation was found in this research pass for Alianza para el Progreso, Acción Popular, Avanza País, the Perú Libre successor, or the Antauro Humala vehicle — each anticipated by PE-D-06 §5 as a likely seat-holder — suggesting the restored bicameral Congress's partisan landscape consolidated around six blocs rather than reproducing the unicameral-era party roster; this reallocation, if confirmed against primary sources, would itself revise the Effective-Number-of-Parties analysis in §5.3 above.

The 28 July 2026 inauguration. Keiko Fujimori was sworn in as Peru's first woman elected to the presidency by popular vote, on the Bicentenario of San Martín's 1821 proclamation of independence, in a ceremony reported to have been attended by King Felipe VI of Spain and the Presidents of Argentina (Javier Milei), Bolivia (Rodrigo Paz), Chile (José Antonio Kast), Ecuador (Daniel Noboa), Paraguay (Santiago Peña), Uruguay (Yamandú Orsi), Panama (José Raúl Mulino), and Honduras (Nasry Asfura). Opposition legislators reportedly held up photographs of those killed in the December 2022 – 2023 protests (PE-D-03) and walked out of the chamber before her address. Addressing Congress, Fujimori announced a "two fronts" emergency framework — El Niño mitigation and public security — sought delegated legislative powers from Congress on both fronts, and pledged that armed forces would "temporarily take the lead in security operations" in areas afflicted by organised crime, drug trafficking, and illegal mining until control could be returned to civilian policing [TBD-VERIFY: pending primary-source fetch against the Mensaje a la Nación transcript; search-corroborated via France24, NPR, CNN en Español, and DLA Piper's policy-and-regulatory client alert]. On 27 July 2026 — the day before the inauguration — Fujimori announced her first three cabinet names: Luis Galarreta as Presidente del Consejo de Ministros, Carlos Espá as Foreign Minister, and Elmer Cuba as Economy Minister; the remaining members of the 19-minister Council of Ministers were announced and sworn in on inauguration day itself [TBD-VERIFY: pending primary-source fetch; search-corroborated via U.S. News and AS/COA's cabinet tracker].

On the Pedro Castillo trial (§13 above, and PE-D-02): the Sala Penal Especial of the Corte Suprema convicted Castillo on 27 November 2025 of the lesser charge of conspiración para la rebelión rather than rebellion itself — the court holding that the 7 December 2022 plan did not assemble the material and personal means the rebellion statute requires — and sentenced him to 11 years, 5 months, and 15 days, with disqualification from public office; Betssy Chávez and Willy Huerta received the same sentence, and Aníbal Torres 6 years and 8 months, all for conspiracy for rebellion. An appeal was admitted (resolution of 29 December 2025); as of this update's cut-off (29 August 2026) the Sala Penal Permanente had scheduled the appeal's calificación hearing for 23 September 2026, meaning the conviction stands but is not yet final [TBD-VERIFY: pending primary-source fetch against the Poder Judicial docket; search-corroborated via RPP, Infobae, El Comercio, and actualidadpenal.pe]. This falls short of the 34-year sentence the Fiscalía had sought and is a materially lower outcome than PE-D-06 §6 and this document's earlier sections anticipated.

This postscript does not attempt to re-verify or re-narrate the pre-October-2025 institutional detail in §§2–11 (the bicameral architecture, the electoral-administration mechanics, the tachas process, the candidate typology) except where corrected above; those sections' analytical value lies chiefly in describing institutions and processes that did operate largely as designed, even though the office of the Presidency changed hands twice before the events they narrate actually occurred.

---

Forward stubs for future PE-D-09 and successor documents:

• PE-D-09: The First Hundred Days of the Post-Boluarte Presidency (August 2026 – November 2026) — the voto de investidura sequence, the early cabinet trajectory, the Mensaje a la Nación policy commitments, the Castillo trial conclusion, and the early Senate institutional self-construction.
• PE-D-10: The Boluarte Post-Presidency Prosecutorial Trajectory (August 2026 – 2028) — the Caso Rolex indictment-and-trial sequence, the Caso Cofopri trajectory, the protest-period accountability progression, and the comparative outgoing-President legal-exposure trajectory.
• PE-A-07: The First Bicameral Session (28 July 2026 – December 2026) — the Senate's institutional self-construction, the Reglamento del Senado adoption, the Mesa Directiva elections, the Standing Committees constitution, and the early inter-chamber coordination patterns.
• PE-K-04: The 28 July 2026 Bicentenario Transition — the dual-ceremony decisional architecture, the Programa Oficial del Bicentenario implementation, and the symbolic-political framing of the post-Castillo / post-Boluarte opening.