Overview

The 2019–2020 Peruvian constitutional crisis began on 30 September 2019 when President Martín Vizcarra dissolved the Congress of the Republic. The move followed a prolonged confrontation between the executive and the legislature over judicial and anti‑corruption reforms and the use of confidence votes. Congress responded by declaring the presidency suspended and naming Vice‑President Mercedes Aráoz as interim president, a step that most state institutions and foreign observers regarded as lacking legal validity.

Background and constitutional basis

The crisis grew out of disputes over appointments, reform proposals and the limits of executive power. Peru's Constitution contains a provision that allows a president to dissolve Congress after certain conditions are met involving denial of confidence to the Council of Ministers. The interpretation of whether those conditions existed was contested: the executive argued that a prior parliamentary action amounted to a denial of confidence, while many legislators rejected that interpretation and maintained that dissolution was unjustified.

Key events

  1. 30 September 2019: President Vizcarra issued a decree dissolving Congress, citing the constitutional mechanism tied to confidence votes and a persistent legislative blockade.
  2. 30 September 2019: The outgoing Congress declared Vizcarra suspended and attempted to install Vice‑President Aráoz as interim president; these declarations were widely described as symbolic and without practical control.
  3. 1 October 2019: Mercedes Aráoz announced her resignation from the interim post, and Vizcarra issued a decree scheduling extraordinary legislative elections for 26 January 2020 to replace the dissolved legislature.

Constitutional scholars, political actors and institutions disagreed over the legality of the dissolution. Supporters of the president argued the action was a lawful and necessary step to break a legislative deadlock that impeded anti‑corruption measures. Critics said the executive had overstepped its authority. Key state bodies, including much of the armed forces and the judiciary's public offices, as well as many international actors, treated Vizcarra as the constitutional president, which limited Congress's practical capacity to enforce its declarations.

Outcome and significance

The immediate practical outcome was the calling of early legislative elections for 26 January 2020 and the continued governance of Vizcarra until the new Congress was seated. The episode underscored deep institutional tensions in Peru, intensified public scrutiny of both the executive and legislature, and had lasting political effects by reshaping legislative representation. It also prompted wider public debate about constitutional mechanisms for resolving clashes between branches of government and the reform of political institutions in Peru.

Notable distinctions

  • The crisis was chiefly constitutional and political rather than military or civil‑war in nature: competing claims of legitimacy were resolved through institutional, electoral and judicial channels rather than prolonged street fighting.
  • Although Congress attempted to assert an alternative executive, it lacked broad institutional backing; most state authorities and the international community continued to recognize the president who had dissolved Congress.