Social Democratic Party (Portugal)
The PSD was founded in 1974, two weeks after the Carnation Revolution and in 1976 adopted its current name. In 1979, the PSD allied with centre-right parties to form the Democratic Alliance and won that year's election. After the 1983 general election, the party formed a grand coalition with the Socialist Party, known as the Central Bloc. This was before winning the 1985 general election under new leader Aníbal Cavaco Silva, who shifted the party to the right.