Institutional Revolutionary Party
Cárdenas's successor Manuel Ávila Camacho gave the party its present name in 1946. The party, under its three different names, held every political position until 1946 when the PAN started winning posts for municipal president and federal deputies and senators, starting in 1946, after the party changed its name to its current name, the Institutional Revolutionary Party. By then, the party had acquired a reputation for corruption, and while this was admitted (to a degree) by some of its affiliates, its supporters maintained that the role of the party was crucial in the modernization and stabilization of Mexico.
Federation of Parties of the Mexican People
The party was founded by Genovevo de la O, a former Zapatista commander, in 1945. The FPPM drew most of its support from left wing academics and soldiers that had grown disillusioned with the almost omnipotent Institutional Revolutionary Party (PRI), and believed the PRI no longer represented the ideas of the Mexican Revolution. Notable members of the FPPM were Marcelino García Barragán, Rubén Jaramillo, Francisco J. Múgica, José C. Valadés and Miguel Henríquez Guzmán. Most of them had been supporters of Emiliano Zapata and revolucionary leaders , and the FPPM was notable for being the last split from the PRI that included leaders who had participated in the Mexican Revolution.