Socialist Autonomy was a social-democratic

Social democracy

Social democracy is a political ideology of the center-left on the political spectrum. Social democracy is officially a form of evolutionary reformist socialism. It supports class collaboration as the course to achieve socialism...

 Italian political party.

It was founded in October 1953 by disgruntled members of the Italian Socialist Workers' Party

Italian Democratic Socialist Party

The Italian Democratic Socialist Party is a minor social-democratic political party in Italy. Mimmo Magistro is the party leader. The PSDI, before the 1990s decline in votes and members, had been an important force in Italian politics, being the longest serving partner in government for Christian...

 (PSLI), who did not agree with the proposed new new electoral law supported by their party and who wanted a better unity with the Italian Socialist Party

Italian Socialist Party

The Italian Socialist Party was a socialist and later social-democratic political party in Italy founded in Genoa in 1892.Once the dominant leftist party in Italy, it was eclipsed in status by the Italian Communist Party following World War II...

 (PSI). Its members included Pietro Calamandrei, Tristano Codignola, Piero Caleffi, Edmondo Cossu, Giuseppe Faravelli, Aldo Garosci, Antonio Greppi and Paolo Vittorelli.

In April 1953 the party merged with some disgruntled members of the Italian Republican Party

Italian Republican Party

The Italian Republican Party is a liberal political party in Italy.The PRI is party with old roots that originally took a left-wing position, claiming descent from the political position of Giuseppe Mazzini...

 (PRI), led by Ferruccio Parri

Ferruccio Parri

Ferruccio Parri was an Italian partisan and politician who served as the 43rd Prime Minister of Italy for several months in 1945. During the resistance he was known as Maurizio.-Biography:...

, to form People's Unity

People's Unity (Italy)

Popular Unity was a short-lived social-democratic and social-liberal political party in Italy.It was formed in April 1953 by disgruntled members of the Italian Democratic Socialist Party and the Italian Republican Party , who did not agree with the new electoral law approved by the Parliament...

(UP).

The name "Socialist Autonomy" was laterly used by PSI dissidents in different contexts. In most of the cases these re-joined the party soon later.