Italian Socialist Party of Proletarian Unity was created on 1964-01-12.
Italian Socialist Party was created in 1892.
Italian Revolutionary Socialist Party was created in 1881.
New Italian Socialist Party was created on 2001-01-20.
Proletarian Masses Party was created in 1928.
Proletarian Catalan Party was created in 1934.
Proletarian Party of America was created in 1919.
Proletarian Liberation Party was created in 1989.
Japan Proletarian Party was created in 1937.
Italian Socialist Party ended in 1994.
The Italian Socialists was created on 2006-02-07.
Chilean Communist Party - Proletarian Action - was created on 1979-11-08.
Freedom Socialist Party was created in 1966.