Mexico Chamber of Deputies election 2015 — Results
Election day: June 7, 2015
- PRI: 30.65%, 203 seats
- PAN: 22.07%, 109 seats
- PRD: 11.47%, 55 seats
- Morena: 8.81%, 35 seats
- PVEM: 7.26%, 47 seats
- MC: 6.40%, 25 seats
- Nueva Alianza: 3.92%, 11 seats
- PES: 3.49%, 8 seats
Turnout: 47.72%
About this election
How the voting works
The Chamber of Deputies has 500 members elected for three-year terms by a mixed system: 300 are chosen by first-past-the-post in single-member districts, and 200 are allocated by proportional representation from closed party lists in five large regional constituencies. The proportional tier corrects the disproportionality of the district races, and a cap prevents any single party from holding more than 8% of seats above its vote share. To register and keep its national registration, a party must clear a 3% threshold. The election was the first run under the 2014 reform that created the INE and, for the first time, allowed independent candidates and re-election of legislators.
Compiled and reviewed from official results by ElectioMap. See our data methodology.
In numbers
- 8.58 points separated PRI from PAN.
- PRI converted 30.65% of the vote into 203 of 500 seats (40.60%), 9.95 points more than its vote share.
- The top two shared 52.72% of the vote between them, and 6 lists cleared 5%.
- Turnout of 47.72% is the lowest of the 4 Chamber of Deputies elections covered here since 2015.
Calculated from the official figures on this page and from the other elections of this type in our archive.
Understanding this election
- Why Turnout Figures Disagree — why two sources publish different turnout for one election
- D’Hondt vs Sainte-Laguë — how a divisor formula turns vote shares into seats
- How Electoral Systems Work Around the World — first-past-the-post, proportional and mixed systems, with real numbers