Institutional Revolutionary Party
The Institutional Revolutionary Party (, PRI) is a Mexican political party founded in 1929 that held uninterrupted power in the country for 71 years from 1929 to 2000, first as the National Revolutionary Party (, PNR), then as the Party of the Mexican Revolution (, PRM), and finally renaming itself as the Institutional Revolutionary Party in 1946.
Institutional Revolutionary Party
The growth of the PAN and PRD parties culminated in 2000, when the PAN won the presidency, and again in 2006 (won this time by the PAN with a small margin over the PRD.) Many prominent members of the PAN (Manuel Clouthier, Addy Joaquín Coldwell and Demetrio Sodi), most of the PRD (most notably all three Mexico City mayors Andrés Manuel López Obrador, Cuauhtémoc Cárdenas and Marcelo Ebrard), the PVEM (Jorge González Torres) and New Alliance (Roberto Campa) were once members of the PRI, including many presidential candidates from the opposition (Clouthier, López Obrador, Cárdenas, González Torres, Campa and Porfirio Muñoz Ledo, among many others).