title: Social Democratic Party
text: Social Democratic Party (Estland)
   Social Democratic Party (IJsland)
   Social Democratic Party (Japan)
   Social Democratic Party (Litouwen)
   Social Democratic Party (Nieuw-Zeeland)
   Social Democratic Party (Nigeria)
   Social Democratic Party (Roemenië)
   Social Democratic Party (Verenigd Koninkrijk)
   Social Democratic Party (Verenigde Staten)
   Social Democratic Party (Zambia)
   Social Democratic Party (Zwitserland)