Vladimir Ilyich Ulyanov, better known as Vladimir Lenin, was a Russian lawyer, revolutionary, politician and political theorist who served as the first and founding head of government of Soviet Russia from 1917 to 1924 and of the Soviet Union from 1922 to 1924. Under his administration, Russia, and later the Soviet Union, became a one-party socialist state governed by the Communist Party. Ideologically a Marxist, his development of the ideology is known as Leninism.