Mexico's National Electoral Institute (INE) officially launched the 2026-2027 federal electoral process on September 10, 2026. The concurrent election will renew all 500 federal congressional seats and 19,609 local positions, including 17 governorships. Election day is Sunday, June 6, 2027.

The process begins with 505 activities, 153 projects, and 44 institutional processes ahead, according to the institute's Comprehensive Plan and Calendar, as reported by La Crónica de Hoy. The election is simultaneously federal and local: in addition to the Chamber of Deputies, all 32 federal entities will hold elections, and 17 of them will elect a governor, among them Chihuahua, Nuevo León, Sinaloa, Sonora, Guerrero, and Michoacán. The full Chamber renews, along with the qualified majority that currently sustains the ruling coalition, the threshold that determines which constitutional reforms are viable. The outcome will also shape the balance of political forces heading into 2030.

These elections will debut two constitutional changes approved during Congress's extraordinary session, according to Expansión Política: the nullification of an election due to foreign interference or intervention, and the INE's Candidacy Integrity Verification Commission. The latter will receive lists of candidates voluntarily submitted by political parties and channel them to the Attorney General's Office (Fiscalía General de la República), the National Intelligence Center (Centro Nacional de Inteligencia), the Financial Intelligence Unit (Unidad de Inteligencia Financiera), and the National Banking and Securities Commission (Comisión Nacional Bancaria y de Valores). Parties themselves will decide whether or not to submit their candidates. The judicial election was moved to June 4, 2028.

In an interview with Expansión Política, INE president councilor Guadalupe Taddei urged party leaderships to be "exaggeratedly careful" in their nominations and to attend to what she described as a societal demand.

The next milestone on the calendar is September 30, when the 32 local councils will be installed; the 300 district councils follow on November 30. Pre-campaigns begin January 4, 2027, and candidate registration opens from March 22 to April 3.

This article was drafted with artificial intelligence assistance from verified sources and reviewed by a human editor before publication.