Italian Socialist Party ended in 1994.
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.
Italian Socialist Party of Proletarian Unity was created on 1964-01-12.
Socialist Party of Vietnam ended in 1988.
Portuguese Socialist Party ended in 1933.
Socialist Party of Slovenia ended in 1994.
Socialist Party of Washington ended in 1972.
Republican Socialist Party ended in 1889.
Sammarinese Socialist Party ended in 2005.
Socialist Union Party ended in 1941.
Socialist Party - Marxist - ended in 1958.