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2015 Mexican legislative election

2015 Mexican legislative election
← 2012 7 June 2015 2018 →

All 500 seats in the Chamber of Deputies
251 seats needed for a majority
Party Leader % Seats +/–
PRI César Camacho Quiroz 30.65 203 −4
PAN Marko Antonio Cortés Mendoza 22.07 109 −5
PRD Francisco Martínez Neri 11.47 55 −45
MORENA Rocío Nahle García 8.81 35 New
PVEM Jesús Sesma Suárez 7.26 47 +13
MC Dante Delgado Rannauro 6.40 25 +9
PNA Luis Alfredo Valles Mendoza 3.92 11 +1
PES Alejandro González Murillo 3.49 8 New
PT Alberto Anaya Gutiérrez 2.99 6 −13
Independents 0.59 1 New
This lists parties that won seats. See the complete results below.

Legislative elections were held in Mexico on 7 June 2015,[1] alongside municipal elections.


Traditionally elections had taken place on the first Sunday of July, but in 2015 were set to the first Sunday of June.[2]

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.[3] Constitutional reforms in 2014 led to the creation of the National Electoral Institute, replacing the Federal Electoral Institute.


There were around 22 reported killings across the country, possibly involving campaign coordinators, precandidates and candidates. Notable cases included the 2 June campaign of Miguel Ángel Luna Munguía, the Party of the Democratic Revolution (PRD) candidate for federal deputy in the state of Mexico, and the 27 May campaign of Israel Hernández Fabela,[4] the PRI candidate for local representative for the Federal District's campaign coordinator.

In certain parts of the country that had already experienced significant governance issues, the atmosphere before the elections was even more tense and violent. The states of Oaxaca, Michoacán, Jalisco and Guerrero were notable among them. Since drug trafficking organizations and other organized crime elements control significant regions, the state security forces stationed there engage in activities and operations that create extremely dangerous and unique situations for citizens, like the violent clashes with the Jalisco Nueva Generación Cartel that occurred in Jalisco at the beginning of May. The cartel demonstrated significant firepower, shooting down a Cougar helicopter of the Mexican Army, in which nine troops died, mostly members of the special forces and the Federal Police.[5][6]

Violent attacks occurring before the 2015 elections included:

  • In the municipality of Tixtla , Guerrero, riots occurred in protest of the disappearance of 43 students from a rural school in the town of Ayotzinapa. After the burning of more than 20% of the polling stations, the elections in the municipality were declared annulled, leaving the votes for state governor, federal and local deputies outside the official count and the municipal mayoral election annulled.[7]

Protocol to Address Political Violence against women

The challenges that women face in exercising their political and electoral rights arose from the violent circumstances surrounding the 2015 election cycle. To that end, the Protocol was signed in conjunction with a number of institutions, including FEPADE, the Court Electoral of the Judicial Branch of the Federation, the Executive Commission for Attention to Victims and the National Institute for Women, among others, with the goal of fostering equality, non-discrimination and non-violence in political and electoral spaces, as well as the appropriate exercise of political and electoral rights[18] by women.[19]

Opinion polls

Date Pollster PRI PAN PRD PVEM PT PANAL MC Morena PH PES Undeclared Lead
3 Jun 2015 Buendía & Laredo 28.8 24.7 11.7 9.2 4.1 2.8 4.7 8.8 1.5 2.4 32.0 4.1
3 Jun 2015 BGC–Excélsior 32.0 26.0 13.0 9.0 2.0 3.0 4.0 9.0 1.0 1.0 24.9 6.0
2 Jun 2015 Parametría 31.0 25.0 11.0 8.0 2.0 4.0 6.0 9.0 2.0 2.0 6.0
2 Jun 2015 Mitofsky 32.0 23.9 17.2 5.9 2.8 3.1 3.9 9.8 0.6 0.7 29.0 8.1
30 Mar 2015 Reforma 32.0 22.0 14.0 7.0 2.0 4.0 3.0 8.0 2.0 4.0 10.0
20–22 Feb 2015 Mitofsky[permanent dead link] 31.0 26.0 16.0 8.0 3.0 2.0 3.0 9.0 1.0 1.0 37.4 5.0
12–18 Feb 2015 Buendía & Laredo 30.0 26.0 13.0 11.0 3.0 3.0 2.0 9.0 1.0 1.0 4.0
10–15 Jan 2015 Parametría 31.0 27.0 12.0 10.0 2.0 3.0 3.0 10.0 1.0 1.0 4.0
1 Jul 2012 Federal election 31.9 25.9 18.5 6.1 4.6 4.1 4.0 6.0


Institutional Revolutionary Party11,636,95730.654811,575,38130.70155203–4
National Action Party8,377,53522.07538,328,12522.0956109–5
Party of the Democratic Revolution4,335,32111.42274,293,41111.392855–45
Ecologist Green Party of Mexico2,757,1707.26182,740,2087.272947+13
Citizens' Movement2,431,0636.40152,412,8176.401025+9
New Alliance Party1,486,6263.92101,475,4233.91111+1
Social Encounter Party1,325,0323.4981,310,5393.4808New
Labor Party1,134,1012.9901,138,8643.0266–13
Humanist Party856,7162.260847,6892.2500New
Non-registered candidates52,3710.14051,5990.14000
Valid votes37,963,63395.2337,703,82195.25
Invalid/blank votes1,900,4494.771,881,3844.75
Total votes39,864,082100.0039,585,205100.00
Registered voters/turnout83,536,37747.7283,536,37747.39
Source: Diario Oficial, Diario Oficial, Election Resources


  1. ^ "Proceso Electoral Federal 2014-2015". Instituto Nacional Electoral (in Spanish). Archived from the original on 17 February 2015. Retrieved 12 May 2015.
  2. ^ "¿Y por qué las elecciones son en junio y no en julio?". Zoom Legislativo (in Spanish). Retrieved 12 May 2015.
  3. ^ Electoral system IPU
  4. ^ "Proceso electoral de elecciones intermedias en México deja 21 políticos asesinados". AméricaEconomía (in Spanish). Retrieved 2024-02-21.
  5. ^ "Elecciones intermedias en México 2015: tensas y complejas pero con señales de cambio". Real Instituto Elcano (in European Spanish). Retrieved 2024-02-21.
  6. ^ "Proceso electoral de elecciones intermedias en México deja 21 políticos asesinados". AméricaEconomía (in Spanish). Retrieved 2024-02-21.
  7. ^ "Declaran oficialmente anulada la elección en Tixtla" (in Mexican Spanish). 2015-06-07. Retrieved 2024-02-21.
  8. ^ Redacción (2015-06-07). "Así se vivieron los comicios intermedios 2015". Excélsior (in Mexican Spanish). Retrieved 2024-02-21.
  9. ^ Redacción (2015-06-07). "Así se vivieron los comicios intermedios 2015". Excélsior (in Mexican Spanish). Retrieved 2024-02-21.
  10. ^ Hidalgo, Redacción Quadratín (2015-06-06). "Balean a Rosendo Cruz, candidato a diputado por Tula". Quadratin Hidalgo (in Spanish). Retrieved 2024-02-21.
  11. ^ "Atacan sede del PRI en Matamoros Tamaulipas". El Financiero (in Spanish). 2015-06-07. Retrieved 2024-02-21.
  12. ^ "Localizan decapitada a precandidata del PRD a alcaldía en Guerrero". Excélsior (in Mexican Spanish). 2015-03-11. Retrieved 2024-02-21.
  13. ^ "Asesinan de 15 balazos a candidato del PRI a la alcaldía de Chilapa, Guerrero". Aristegui Noticias (in Spanish). Retrieved 2024-02-21.
  14. ^ EFE (2015-05-20). "Autoridades mexicanas interrogan a 23 policías por asesinato de un candidato". San Diego Union-Tribune en Español (in Spanish). Retrieved 2024-02-21.
  15. ^ "Nueva Alianza lamenta el asesinato de cuatro miembros en Guerrero". ADNPolítico (in Spanish). 2015-05-04. Retrieved 2024-02-21.
  16. ^ Ahrens, Jan Martínez (2015-06-03). "Asesinado a balazos un candidato a diputado federal del PRD". El País (in Spanish). ISSN 1134-6582. Retrieved 2024-02-21.
  17. ^ "Un candidato del PRI en Tabasco es asesinado afuera de su casa". Animal Politico. 2015-05-15. Retrieved 2024-02-21.
  18. ^ Joaquin (2022-01-05). "Números de Teléfono del INE - Instituto Nacional Electoral". BRUJULEAMEX (in Spanish). Retrieved 2024-02-21.
  19. ^
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2015 Mexican legislative election
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