Federal Election Day

Mexico’s modern federal election day grew from a long struggle to make political competition meaningful. Elections existed throughout the nineteenth century and the Porfirian era, but unequal power, restricted participation and repeated reelection often limited their democratic force. The Mexican Revolution began after the disputed 1910 presidential election, and Francisco I. Madero’s slogan “effective suffrage, no reelection” became one of the new political order’s defining principles.

Electoral institutions changed repeatedly during the twentieth century. Federal authorities once organized and judged elections with limited independence, while opposition parties challenged unequal access and disputed results. Reforms from the 1970s onward broadened representation, created an autonomous electoral authority and established professional voter registration and polling systems. The institution now known as the Instituto Nacional Electoral, or INE, organizes federal elections and coordinates with state electoral bodies.

Ordinary federal elections take place on the first Sunday of June in the applicable year. The Chamber of Deputies is renewed every three years, while presidential and Senate elections occur every six years. Article 74 of the Federal Labour Law recognizes the date designated by federal and local election laws as a mandatory rest day for ordinary voting. Because local and extraordinary elections can follow different calendars, this site generates the regular three-year federal cycle and relies on official INE announcements for confirmation.