Polish Social Democratic Party of Galicia ended in 1919.
Polish Social Democratic Party of Galicia was created in 1890.
Polish Christian Democratic Party ended in 1928.
Polish Christian Democratic Party was created in 1919.
Polish-Lithuanian Social Revolutionary Party was created in 1881.
Christian Social Democratic Party was created in 2002.
Social Democratic Party of Albania was created in 1991.
Czech Social Democratic Party was created in 1878.
Social Democratic Party of Finland was created in 1899.
Social Democratic Party of Russia ended in 2007.
Roma Democratic Social Party was created in 2005.
Social Democratic Party of Kyrgyzstan was created in 1993.
Yugoslav Social-Democratic Party was created in 1896.