Institutional Revolutionary Party

The Institutional Revolutionary Party (, PRI) is a Socialist-leaning political party in Mexico founded in 1929. It held 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.
The current President Enrique Peña Nieto is a member of PRI. Former presidents under PRI include: Pascual Ortiz Rubio, Lázaro Cárdenas, Adolfo López Mateos, Gustavo Díaz Ordaz, Luis Echeverría Álvarez, José López Portillo, Miguel de la Madrid, Carlos Salinas de Gortari and Ernesto Zedillo.