Ospina formed a moderate faction friendly to the less extremist members of the Liberal Party. National Front In 1953 a coup d'état against Gómez was led by the conservative General Gustavo Rojas Pinilla. Rojas was close to Mariano Ospina Pérez and his faction of the Conservative Party, as well as to some moderate liberals. Rojas began his government with the support of prominent politicians of both parties, yet he decided to make his own political party in 1955, the Popular Action Movement. Rojas censored and closed important newspapers and began seeking re-election. Fearing a possible dictatorship, members of the Conservative and Liberal parties created an alliance called the National Front () that prevented Rojas from being re-elected. The National Front was a pact in which for sixteen years, Conservatives and Liberals would share power locally and nationally, and govern the country by taking turns in the presidency. The Conservative Party would not present a candidate for the 1958 and 1966 presidential elections, and the Liberals would support the Conservative candidate in 1962 (Guillermo León Valencia) and 1970 (Misael Pastrana). During this historical period conservative dissidents led by Jorge Leyva Urdaneta opposed the pact, and presented him as presidential candidate in 1958 and 1962. Conservatives Belisario Betancur and Evaristo Sourdis were candidates for the 1970 election, losing against Pastrana. Late 20th century During the National Front the ideological differences between the parties started to disappear; however, the parties themselves survived because most of their members came from traditional families and political clans. Both parties were taken over by regional political lords, while traditional factions of the Conservative Party survived with new leaders. The Ospina faction survived through Misael Pastrana's son Andrés Pastrana, while Álvaro Gómez Hurtado, son of Laureano Gómez, led a dissident group called the National Salvation Movement. Gómez was murdered in 1995 in unclear circumstances, although some testimony claims that the killers were members of the government and the mafia. In 1982, conservative Belisario Betancur was elected president. After that, the party was in opposition until 1998, when Andrés Pastrana was chosen to be the president. The party used the name Social Conservative Party () between 1990 and 1992. During this period many new parties were formed, including some movements that seceded from the Conservative Party. Among them were the National Salvation Movement (mentioned above), the "Independent Conservatism" movement of the Gerlein family, Pastrana's independent party New Democratic Force,