Communist Party of the Soviet Union
Before the creation of the CPSU, its members were part of the Russian Social Democratic Labour Party. They made up a group within that party, which was called the Bolsheviks. The first leader of the CPSU was Vladimir Lenin. The first General Secretary of the party was Stalin from 1922-52. The party led the 1917 October Revolution that overthrew the Russian Provisional Government. From 1918-25, the name of the party was Russian Communist Party. From 1925-52, the name was All-Union Communist Party. The Party took the name Communist Party of the Soviet Union in 1952.
The Communist Party controlled all the government in the Soviet Union. The party supported communist movements in Eastern Europe, Asia and Africa. The CPSU was dissolved in 1991, and continued as the Communist Party of the Russian Federation. The new CPRF has sometimes been the largest in the Russian parliament, the State Duma.