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.
Party of the Democratic Revolution
The party was founded by smaller left-wing parties such as the Mexican Communist Party (PCM, "Mexican Communist Party"), Unified Socialist Party of Mexico (PSUM, "Unified Socialist Party of Mexico"), Socialist Mexican Party (PMS, "Socialist Mexican Party") and Mexican Workers' Party (PMT, "Mexican Workers' Party"). The PMS donated its registration with the Federal Electoral Commission (CFE) to enable the new party to be established.