Spanish Social Democratic Union

Spanish Social Democratic Union (Spanish: Unión Social Demócrata Española; USDE) was a social liberal political party in Spain that opposed the Francoist State and wanted a liberal democracy in Spain. The USDE was founded in 1974 by Dionisio Ridruejo.

Spanish Social Democratic Union
Unión Social Demócrata Española
Secretary-GeneralDionisio Ridruejo
Preceded bySocial Party of Democratic Action
IdeologySocial liberalism
Liberal democracy
Political positionCenter
National affiliationDemocratic Convergence Platform
Social Democratic Federation


It was the successor of the Social Party of Democratic Action founded in 1957. The USDE had social-catholics, liberal and social democratic internal currents.[1]

In 1975 the USDE joined the Democratic Convergence Platform. Fernando Chueca Goitia, one of the founders of USDE, left the party in July 1976 to join the People's Democratic Party, where he was elected president in December of that year.[2][3]

See alsoEdit


  1. ^ "Unión Social Demócrata Española". Fundación Juan March (in Spanish). Retrieved 13 February 2017.
  2. ^ "El arquitecto Fernando Chueca". El País (in Spanish). 30 July 1976. Retrieved 13 February 2017.
  3. ^ "Chueca Goitia, presidente del Partido Demócrata Popular". El País (in Spanish). 22 December 1976. Retrieved 13 February 2017.