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.
Mexican Democratic Party
Whilst the UNS faded after the 1940s it continued as a local group and was boosted, along with a number of other opposition groups, by a series of electoral reforms during the 1970s that introduced an element of proportional representation into the electoral system. As a result of these the UNS, the activities of which were largely confined to Guanajuato, reconstituted as a political party under the name Mexican Democratic Party. The party was formed against a backdrop of renewed importance for the Catholic Church in Mexican society, with a growth in the influence of groups such as Opus Dei whilst the opposition National Action Party (PAN) self-identified as Catholic. The two parties differed however in that the PDM drew support from peasants whilst the PAN was firmly the province of the urban middle classes.