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Socialist Unity (Spanish: Unidad Socialista, US) was a Spanish party alliance formed to contest the 1977 general election by the People's Socialist Party (PSP) of Enrique Tierno Galván and the Federation of Socialist Parties (FPS).[1][2]

Socialist Unity

Unidad Socialista
LeaderEnrique Tierno Galván
Merged intoSpanish Socialist Workers' Party (majority)
IdeologyDemocratic socialism
Political positionLeft-wing

After the PSP and most of the parties within the FPS merged with the Spanish Socialist Workers' Party (PSOE) throughout 1978, the majority of US deputies and senators were absorded into PSOE's parliamentary groups in the Congress and Senate.

Member partiesEdit

Election resultsEdit

Election Popular vote Seats Outcome
Votes % # Congress Senate
1977 816,582 4.46 #5
6 / 350
4 / 208
UCD minority


  1. ^ "Ratificada la coalición PSP-FPS". El País (in Spanish). 3 May 1977. Retrieved 24 March 2017.
  2. ^ "José Alonso encabezará la del Senado en Madrid". El País (in Spanish). 7 May 1977. Retrieved 24 March 2017.