List of leaders of the Soviet Union
Following Joseph Stalin's consolidation of power in the 1920s, the post of the General Secretary of the Central Committee of the Communist Party became synonymous with leader of the Soviet Union, because the post controlled both the Communist Party and the Soviet Government, both indirectly, via Party membership, and via the tradition of a single person holding two highest posts: in the Party and in the government. The post of the General Secretary was abolished in 1952 under Stalin and later re-established by Nikita Khrushchev under the name of First Secretary. In 1966, Leonid Brezhnev reverted the office title to its former name. Being the head of the Communist Party of the Soviet Union (CPSU), the office of the General Secretary was the highest in the Soviet Union until 1990. The post of General Secretary lacked clear guidelines of succession, so after the death or removal of a Soviet leader the successor usually needed the support of the Politburo, the Central Committee, or another government or party apparatus to both take and stay in power. The President of the Soviet Union, an office created in March 1990, replaced the General Secretary as the highest Soviet political office.
Central Committee of the Communist Party of the Soviet Union
By the time of Stalin's death in 1953, the Central Committee had become largely a symbolic organ that was responsible to the Politburo, and not the other way around. The death of Stalin revitalised the Central Committee, and it became an important institution during the power struggle to succeed Stalin. Following Nikita Khrushchev's accession to power, the Central Committee still played a leading role; it overturned the Politburo's decision to remove Khrushchev from office in 1957. In 1964 the Central Committee ousted Khrushchev from power and elected Leonid Brezhnev as First Secretary. The Central Committee was an important organ in the beginning of Brezhnev's rule, but lost effective power to the Politburo. From then on, until the era of Mikhail Gorbachev (General Secretary from 1985 to 1991), the Central Committee played a minor role in the running of the party and state – the Politburo operated as the highest political organ in the Soviet Union.