Scottish Socialist Party United Left was created in 2006.
Scottish Socialist Party was created in 1998.
Scottish Republican Socialist Party was created in 1982.
Scottish Socialist Party United Left ended in 2007.
United Socialist Workers' Party was created in 1993.
United Socialist Party of Russia was created in 2003.
United Socialist Party - UK - was created in 2004.
Socialist Workers Party - United States - was created in 1938.
World Socialist Party of the United States was created in 1916.
United Jewish Socialist Workers Party was created in 1917.
Socialist Equality Party - United States - was created in 1966.
Scottish Republican Socialist Party ended in 1998.
Scottish United Trades Councils Labour Party was created in 1891.