Chamber of DeputiesSenate

Chamber of Deputies

Election results

Data on parliamentary elections, including the background, candidates, voter turnout, results and the formation of the new legislature. By default the latest election results are displayed. Select a date to view results from previous elections


Election date(s) The date when elections started and ended for directly or indirectly elected parliaments/chambers. The date of appointments for appointed parliaments/chambers.
Expected date of next elections The expected date at which the next elections should take place, based on law or practice.

Voter turnout

Registration Number of people registered to vote
Votes Number of people who actually voted
Voter turnout The percentage is calculated by dividing the number of people who actually voted by the number of people registered to vote


About the election Short description of the context and results of the election.
President Enrique Peña Nieto's Institutional Revolutionary Party (PRI) secured a majority, in coalition with the Green Party of Mexico (PVEM) and the New Alliance. The coalition won 260 seats in the 500-member Chamber of Deputies. Traditional parties saw a reduction in their share of seats. The National Action Party (PAN) took 108 seats - their worst result since 1994. The Democratic Revolutionary Party (PRD) also won fewer seats (60). Thirty-five seats were taken by the National Regeneration Movement (MORENA), a PRD splinter group, headed by former PRD leader Andrés Manuel López Obrador.

These elections were the first to be held after the 2014 constitutional amendments came into force. The amendments allow parliamentarians to seek election for consecutive terms totalling 12 years: up to four consecutive three-year terms for the members of the Chamber of Deputies and two consecutive six-year terms for Senators. Candidates seeking re-election under the revised law are obliged to run for the same party or coalition. The amendments also allow independent candidates to run in elections and require that women should make up 50% of the nominees for all parties in legislative races. In all, 211 women were elected in 2015, up from 184 at the previous elections in 2012.

During the election campaign, the major parties focused discussions on anti-corruption measures, security issues and social and economic development. One of the country's main teaching unions held protests against the 2013 education reform, which provides for teachers to be evaluated. Although the President announced the suspension of the education reform a week before polling day, the union called for an election boycott and prevented 400 voting centres from opening. The union also campaigned for the safe return of some 40 college students, who disappeared in September 2014: prosecutors say that a drug gang killed the students and burned their bodies.
Members elected, by sex
Number of men elected
Number of women elected