General Secretary of the Communist Party of the Soviet Union more than determine party membership composition. Stalin, its first incumbent, used the principles of democratic centralism to transform his office into that of party leader, and later leader of the Soviet Union. In 1934, the 17th Party Congress refrained from formally re-electing Stalin as General Secretary. However, Stalin was re-elected into all other positions and remained leader of the party without diminishment. In the 1950s, Stalin increasingly withdrew from Secretariat business, leaving the supervision of the body to Georgy Malenkov, possibly to test him as a potential successor. In October 1952, at the 19th Party Congress, Stalin restructured the party's
Political repression in the Soviet Union political repression and persecution in the Soviet Union orchestrated by Joseph Stalin in 1937-1938. It involved the purge of the Communist Party of the Soviet Union, repression of peasants, deportations of ethnic minorities, and the persecution of unaffiliated persons, characterized by widespread police surveillance, widespread suspicion of "saboteurs", imprisonment, and killings. Estimates of the number of deaths associated with the Great Purge run from the official figure of 681,692 to nearly 2 million. In Soviet Union, political repressions targeted not only individual persons, but also whole ethnic, social, religious and other categories of population. Population transfer in the Soviet Union