In early April, the National Regeneration Movement (Morena) published an infographic to social media that showed that it was the ninth-largest political party in the world by membership size.
The Bharatiya Janata Party (Indian People’s Party) is easily the world’s largest political party, with 140 million members, but Morena — with more than 12 million members — is no slouch.
¡Somos uno de los partidos políticos más grandes del mundo! 🏆🌎
Hoy somos más de 12 millones de mexicanas y mexicanos protagonistas del cambio verdadero.#MorenaArrasa pic.twitter.com/5nyQmjIPrU
— Morena (@PartidoMorenaMx) April 4, 2026
In fact, the party founded by former president Andrés Manuel López Obrador (AMLO) last decade is the largest political party in Latin America and the third-largest in the Western Hemisphere, behind the Democratic Party and the Republican Party in the United States.
Hence, Morena — whose membership has surged in recent years — is also the largest political party in Mexico.
But what about Mexico’s other political parties?
How many members (afiliados or militantes in Spanish) do they have?
Have their memberships grown or declined in recent years?
We answer those questions in this week’s “Mexico in Numbers” article.
1. Morena
According to preliminary data published by the National Electoral Institute (INE) in March, Morena has 12.018 million members.
In 2023, when the INE published the most recent verified membership numbers, Morena had 2.32 million members.
Therefore, Morena’s membership grew by an astonishing 417.5% in the space of three years.
President Claudia Sheinbaum has praised Morena’s former president, Luisa María Alcalde, and its ex-secretary of organization, Andrés Manuel López Beltrán (AMLO’s son), for growing the party’s membership.
Morena has been Mexico’s ruling party since 2018, and currently governs 23 of the country’s 32 federal entities.
2. The Ecological Green Party of Mexico (PVEM)
Mexico’s second-largest political party by membership size is the Ecological Green Party of Mexico, an ally of Morena.
The party, founded in 1986, has 1.094 million members, according to INE’s preliminary 2026 numbers.
The PVEM’s membership has increased 84.7% since 2023, when the party had 594,417 members.
The PVEM governs one state — San Luis Potosí.
3. The Institutional Revolutionary Party (PRI)
For much of the 20th century, the Institutional Revolutionary Party ruled Mexico as a virtual one-party state. Today it is Mexico’s second-biggest opposition party (based on its representation in federal Congress) and is losing members.
The PRI has 844,255 members, a decline of 40.2% compared to the 1.41 million members it had in 2023.
The PRI last held power at a national level between 2012 and 2018 when Enrique Peña Nieto was president.
The PRI currently governs two northern states: Durango and Coahuila.
4. The Labor Party (PT)
Mexico’s fourth-largest party by membership size is the Labor Party, another ally of Morena.
The party, founded in 1990, has 468,516 members. That figure represents an increase of 2.4% compared to 2023, when the PT had 457,624 members.
5. The National Action Party (PAN)
The National Action Party, Mexico’s main opposition party based on congressional representation, is the country’s fifth-largest political party by membership size.
The almost 90-year-old conservative party has 365,456 members, an increase of 31.6% compared to the 277,665 it had in 2023.
The PAN governed at a federal level during two consecutive six-year terms: Under President Vicente Fox between 2000 and 2006, and under President Felipe Calderón between 2006 and 2012.
The party currently governs four states: Aguascalientes, Chihuahua, Guanajuato and Querétaro.
6. Citizens’ Movement (MC)
Mexico’s sixth-largest political party is Citizens’ Movement, a party previously known as Convergence for Democracy and Convergence.
MC has 339,781 members, according to the INE’s 2026 preliminary numbers. That figure represents a decline of 11.5% compared to the 384,005 members the party had in 2023.
MC governs two of Mexico’s most populous and economically important states: Jalisco and Nuevo León.
Mexico News Daily
