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.
Socialist Mexican Party
The PMS was founded in 1987 through the merger of the Unified Socialist Party of Mexico, the Mexican Workers' Party, the Communist Leftist Union, the People's Revolutionary Movement and the Revolutionary Patriotic Party.