2015 Mexican legislative election


Legislative elections were held in Mexico on 7 June 2015, alongside municipal elections.

Background

Traditionally elections had taken place on the first Sunday of July, but in 2015 were set to the first Sunday of June.

Electoral system

The 500 members of the Chamber of Deputies were elected by two methods; 300 were elected in single-member constituencies, and 200 by proportional representation in a single nationwide constituency. Constitutional reforms in 2014 led to the creation of the National Electoral Institute, replacing the Federal Electoral Institute.

Opinion polls

Results

Of the 160 seats won by the PRI–PVEM alliance, 131 were taken by the PRI and 29 by the PVEM
Of the 29 seats won by the PRD–PT alliance, 23 were taken by the PRD and 6 by the PT