Mexico's political parties and their ideologies (2027)

The election on Sunday 6 June 2027 renews all 500 seats in the Chamber of Deputies. Candidates can be fielded by the eight parties with national registration at the National Electoral Institute (INE): Morena, the PAN, the PRI, the PVEM, the PT, Movimiento Ciudadano, SOMOS and Partido PAZ. The first six have deputies; SOMOS and PAZ were registered in June 2026 and will be running for the first time.

Here are all eight, with the same outline for each: where they come from, who leads them, how many deputies they have, whom they are running with, what vote they won in 2024 and what they stand for according to their documented positions in the test. They are ordered from left to right according to our political compass, that is, according to the calculation we make from their positions on the test statements. This order is not a label: it does not say how each party describes itself or how analysts classify it. How it is obtained is explained below.

This analysis does not quote any poll. The only electoral figures are official INE results and the membership of the Chamber published by its Legislative Information System. Data as of 24 October 2026.

Mexican politics in brief

• The President, Claudia Sheinbaum of Morena, was elected in 2024 for a single six-year term; re-election is not allowed.
• The Chamber of Deputies has 500 members elected every three years: 300 by plurality, one in each district, and 200 by proportional representation, from lists in five regional constituencies. No party may hold more than 300 seats, or a share of the Chamber more than eight points above its share of the vote. To keep its registration, a party needs 3% of the vote. The details are in "How the 500 deputies are elected".
• Coalitions: parties can run together in all districts or in some, but each keeps its own logo on the ballot. Parties running in their first election, such as SOMOS and PAZ, cannot form coalitions.

The 2024 results

Source: agreement INE/CG2129/2024. In 2024, Morena, the PT and the PVEM ran in the Sigamos Haciendo Historia coalition, and the PAN, the PRI and the PRD in Fuerza y Corazón por México; Movimiento Ciudadano ran alone. The PRD fell short of 3% and lost its registration.

The Chamber as of 24 October 2026

The groups do not match the 2024 results because some deputies elected for one party sit in another party's group. Morena, the PVEM and the PT have 364 deputies between them, more than two thirds of the Chamber (334): a constitutional amendment needs the votes of two thirds of the deputies present.

How we order the parties

The political compass places each party on two axes, using its positions on 29 of the 45 statements in the test:

• the economic axis (from −100, left, to +100, right) is based on the statements on the economy and taxes, work and pensions, health and social programs, energy, and water and farming;
• the social axis (from −100, progressive, to +100, conservative) is based on those on rights and freedoms, education and family, the environment, and foreign trade and migration.

The parties are ordered here by the economic axis, the only one of the two that runs from left to right. Three points:

• Some positions are estimated, when the party has not taken an explicit stance; their number is in the table. The methodology explains how they are made.
• SOMOS and PAZ have no deputies and no earlier election platform: their positions come from their founding documents and statements, and are provisional until they file their 2027 platforms, in the first half of January.
• On the social axis the order changes: from Movimiento Ciudadano (−43.3) to the PAN (+46.7), with the PRI almost at the center (−3.3). That is why the table gives both values.

The current is the one on each party's page on this site, in the words of its own documents or, where there are none, those of the press and analysts. The values are our own calculation, the same as on the compass page. The detail, statement by statement, is in "Who is on the left and who is on the right of the compass".

The parties, from left to right

1. Morena

• Origins: the National Regeneration Movement, founded by Andrés Manuel López Obrador, President from 2018 to 2024; registered as a party in 2014. It describes itself as a left-wing "party-movement" inspired by Mexican humanism.
• Leadership: Ariadna Montiel Reyes, its president since May 2026.
• In the Chamber: 254 deputies, the largest group; it is the party of President Claudia Sheinbaum.
• Alliances: it has announced that it will again run in coalition with the PT and the PVEM in 2027.
• In 2024: 24.3 million votes, 42.44%.
• What it stands for: state control of energy (its group voted in 2024 to make Pemex and the CFE "public companies of the State"), social programs as rights for everyone and the ban on GM maize. In the Chamber it voted to elect judges by popular vote, to move the National Guard to the Ministry of Defense and to abolish the autonomous transparency and competition bodies. It is neutral on a tax on large fortunes.

2. Partido del Trabajo (PT)

• Origins: the Labor Party, registered since 1993. Its declaration of principles aims to build a "socialist society".
• Leadership: a collegiate National Coordinating Commission, which includes Alberto Anaya.
• In the Chamber: 49 deputies.
• Alliances: an ally of the government; it will run in coalition with Morena and the PVEM.
• In 2024: 3.3 million votes, 5.69%.
• What it stands for: raising taxes "on property and wealth", restoring a pay-as-you-go pension system with a "State Pension Manager", and consolidating a Latin American bloc "autonomous from the US". It is the ally that departs most from Morena: in March 2026 it voted against the President's electoral reform, and in December 2025 it abstained on the tariff increase on China and other countries without a trade agreement.

3. Partido Verde Ecologista de México (PVEM)

• Origins: the Ecologist Green Party of Mexico, registered since 1993; it describes itself as "the political party of the environmental cause".
• Leadership: Karen Castrejón Trujillo, national leader.
• In the Chamber: 61 deputies, the third-largest group.
• Alliances: an ally of the government; it will run in coalition with Morena and the PT.
• In 2024: 5 million votes, 8.73%.
• What it stands for: "the polluter pays", facial recognition cameras and artificial intelligence to prevent crime, and "promoting the legalisation and regulation of the drug market". It almost always votes with Morena, but in March 2026 most of its group rejected the President's electoral reform, and it did not join Morena's own ban on nominating relatives of officeholders in 2027. 16 of its 29 compass positions are estimated.

4. Partido PAZ

• Origins: a new party that brings together leaders and members of the former Social Encounter Party (PES); the INE registered it in June 2026. Its documents define it by "social liberalism".
• Leadership: chaired since August 2026 by Hugo Eric Flores Cervantes, founder of the PES.
• In the Chamber: no deputies.
• Alliances: it is running for the first time and, by law, without coalitions.
• In 2024: it did not exist.
• What it stands for: its founding documents make the family the main institution the State should promote and call for a social policy that guarantees "universally a minimum basis of social welfare", progressive environmental taxes and autonomy for audit bodies. On abortion, its legal representative said in 2026 that it will keep pushing "initiatives in favor of life". 20 of its 29 compass positions are estimated, more than for any other party.

5. Movimiento Ciudadano

• Origins: registered in 1999 as Convergencia por la Democracia; it has used its current name since 2011. Its statutes define it as social democratic.
• Leadership: Jorge Álvarez Máynez, since December 2024; he was its presidential candidate in 2024.
• In the Chamber: 30 deputies.
• Alliances: in opposition; it has said it will run without alliances in 2027, as in 2024.
• In 2024: 6.5 million votes, 11.35%.
• What it stands for: returning the National Guard to civilian command, "taxes on wealth", guaranteeing legal termination of pregnancy and regulating cannabis for adult use. Its group was the only one to vote against the tariff increase of December 2025 and against the 2024 constitutional amendment requiring the sale of vapes to be punished. It voted against the judicial reform, but in favor, in general terms, of some government laws, such as the 2025 energy laws.

6. SOMOS

• Origins: a new party born of Somos MX, the organization into which the Frente Cívico Nacional turned in 2025. The INE registered it in June 2026 as Somos México, a name it changed on the orders of the Electoral Tribunal.
• Leadership: Guadalupe Acosta Naranjo, former president of the PRD.
• In the Chamber: no deputies.
• Alliances: in opposition; it is running for the first time and, by law, without coalitions. It will choose its candidates in primaries.
• In 2024: it did not exist.
• What it stands for: its 2026 program of action proposes to "bring back the creation of Autonomous Bodies", repeal mandatory pretrial detention, put the National Guard under civilian command, legalise abortion before 12 weeks nationwide and move from prohibition to regulation of drugs. It is the only party that wants social programs aimed mainly at those with least.

7. Partido Revolucionario Institucional (PRI)

• Origins: the Institutional Revolutionary Party was founded in 1929; it governed Mexico until 2000 and again from 2012 to 2018. Its documents define it as a party of social democracy.
• Leadership: Alejandro Moreno Cárdenas, its president since 2019.
• In the Chamber: 36 deputies.
• Alliances: in opposition. It proposes an alliance with the PAN and Movimiento Ciudadano for 2027, which Movimiento Ciudadano rejects and the PAN is only considering in some states.
• In 2024: 6.6 million votes, 11.58%.
• What it stands for: its 2024 platform rejects the election of judges by popular vote, and its program proposes turning the National Guard into a civilian institution and distributing non-contributory pensions through the states and municipalities. It voted against the 2025 General Water Law and in favor of banning the planting of GM maize, and supports a minimum wage above inflation.

8. Partido Acción Nacional (PAN)

• Origins: the National Action Party was founded in 1939; it governed the country from 2000 to 2012. Its documents are based on political humanism.
• Leadership: Jorge Romero Herrera, its president since November 2024.
• In the Chamber: 69 deputies, the second-largest group.
• Alliances: in opposition. In 2025 it announced it was giving up alliances, but in September 2026 it opened the door to coalitions in some states; it has announced none for the federal Chamber.
• In 2024: 10 million votes, 17.56%.
• What it stands for: "We reject taxes that punish saving, building up wealth and inheritance", says its program of action, which also rejects abortion and wants teacher evaluation to be "essential for entry, tenure and promotion". Its 2024 platform promotes private investment in hydrocarbons. It voted against the judicial reform, against moving the National Guard to Defense and against the ban on GM maize.

Alliances: from government to opposition

Morena, the PT and the PVEM ran together in 2024 in the Sigamos Haciendo Historia coalition, on Morena's platform, and have announced that they will do so again in 2027. Coalitions are only final once the INE registers their agreements, in early December 2026. The three almost always vote together, but not on everything: the PT and the PVEM rejected the President's electoral reform in March 2026, which fell short of two thirds, and the PT and Morena also part ways on tariffs and on a tax on large fortunes. They are on the same side on 23 of the 45 statements in the test.

The opposition is divided. The PAN and the PRI ran together in 2024, with the PRD, in Fuerza y Corazón por México; the PRI now proposes to repeat the alliance with the PAN and to add Movimiento Ciudadano, which refuses. On the statements about the National Guard, the election of judges, the autonomous bodies and the Supreme Court, Movimiento Ciudadano, the PRI and the PAN, together with SOMOS, are on the opposite side to the governing parties.

SOMOS and PAZ, by law, run alone in their first election and need 3% of the vote to keep their registration.

Further reading

• Where the parties agree and where they clash, statement by statement: "Where Mexico's parties agree and where they clash".
• All positions, with their sources: the party pages and the comparison table. You can also compare two parties, for example Morena and the PT, the PAN and the PRI, Movimiento Ciudadano and SOMOS or the PAN and Partido PAZ.
• The calendar, polling stations and how to vote: the 2027 election guide.

To find out which party your ideas are closest to, take the test.