Polish United Workers' Party ended in 1990.
Polish Workers' Party ended in 1948.
Workers Party of the United States ended in 1936.
Polish People's Party 'Wyzwolenie' ended in 1931.
Polish Christian Democratic Party ended in 1928.
Polish People's Party 'Piast' ended in 1931.
American Workers Party ended in 1934.
Mexican Workers' Party ended in 1987.
Wage Workers Party ended in 1910.
Polish Social Democratic Party of Galicia ended in 1919.
Polish Socialist Party of the Prussian Partition ended in 1919.
Combat Organization of the Polish Socialist Party ended in 1911.
Jewish Socialist Workers Party ended in 1917.