Political party in Mexico

In Mexico, there are three major political parties :

PAN or National Action Party (Partido Acción Nacional) led by Luis Felipe Bravo[?] - President Vincente Fox's party
PRD or Party of the Democratic Revolution[?] (Partido de la Revolución Democrática) led by Amalia García Medina[?]
PRI or Institutional Revolutionary Party (Partido Revolucionario Institucional) led by Dulce Maria Sauri Riancho[?] - In power for most of the 20th century

Convergencia por la Democracia (CD) Convergence for Democracy - Dante DELGADO Ranauro[?]
Liga de Trabajadores por el Socialismo (LTS) (Trotskist)
Partido Alianza Social (PAS) Social Alliance Party - Jose Antonio CALDERON Cardoso
Partido Auténtico de la Revolución de México (PARM) Authentic Party of the Mexican Revolution
Partido de Centro Democrático (PCD) Party of the Democratic Center - Manuel CAMACHO Solis
Partido de los Comunistas Mexicanos (PCM)
Social Democratic Party (PDS) - Gilberto RINCON Gallardo
Partido del Frente Cardenista de Reconstrucción Nacional (PFCRN)
Partido Liberal Mexicano (PLM)
Partido Obrero Socialista (POS)
Partido Popular Socialista (PPS)
Partido del Trabajo (PT) Workers Party - Alberto ANAYA Gutierrez
Party of the Nationalist Society (PSN) - Gustavo RIOJAIS Santana
Partido Verde Ecologista (PVEM) Mexican Green Ecological Party - Jorge GONZALEZ Torres

In the 19th century the two important parties were: