Senegalese Democratic Union (in French: Union Démocratique Sénégalais) was a political party in Senegal, founded in 1946 by the Communist Study Groups (GEC). UDS became affiliated as the Senegalese section of the African Democratic Rally (RDA). Later UDS was expelled from RDA, and substituted by the less radical Senegalese Popular Movement (MPS). In 1956 UDS decided to merge into the Senegalese Popular Bloc (BPS). Former UDS cadres played an important role in the formation of African Regroupment Party-Senegal (PRA-Sénégal). Sections of the Rassemblement Démocratique Africain Political parties established in 1946 Political parties in Senegal Communist parties in Senegal