Communist Party of the Soviet Union along with the institution of free multiparty elections led to a decline in the party's power, and after the dissolution of the Soviet Union, the banning of the party by later last RSFSR President Boris Yeltsin and subsequent first President of an evolving democratic and free market economy of the successor Russian Federation. A number of causes contributed to CPSU's loss of control and the dissolution of the Soviet Union during the early 1990s. Some historians have written that Gorbachev's policy of "glasnost" (political openness) was the root cause, noting that it weakened the party's control over society. Gorbachev maintained
Communist Party of the Soviet Union Constitution referred to the party as "The leading and guiding force of Soviet society, and the nucleus of its political system, of all state and public organizations, is the Communist Party of the Soviet Union". State socialism was essential and from Stalin until Gorbachev, official discourse considered that private social and economic activity retarding the development of collective consciousness and the economy. Gorbachev supported privatization to a degree but based his policies on Lenin's and Bukharin's opinions of the New Economic Policy of the 1920s, and supported complete state ownership over the commanding heights of the economy. Unlike liberalism, Marxism–Leninism