The victory of the Communist Partisans resulted in the abolition of the monarchy and a subsequent constitutional referendum. A one-party state was soon established in Yugoslavia by the Communist Party of Yugoslavia. It is claimed between 60,000 and 70,000 people died in Serbia during the 1944–45 communist takeover and purge. All opposition was suppressed and people deemed to be promoting opposition to socialism or promoting separatism were imprisoned or executed for sedition. Serbia became a constituent republic within the SFRY known as the Socialist Republic of Serbia, and had a republic-branch of the federal communist party, the League of Communists of Serbia.