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
Rise of Joseph Stalin the beginning of his short and ill-fated struggle with Stalin in the summer of 1928. This activity was soon reported to Stalin and was later used against Bukharin as proof of his factionalism. Trotsky, firmer than ever in his opposition to Stalin, was exiled to Alma-ata in January 1928, and was exiled from the Soviet Union itself in February 1929, sent into exile in Turkey. From his exile, Trotsky continued to oppose Stalin, right up until Trotsky was assassinated on Stalin's orders in August 1940. After the United Opposition were illegalized in December 1927, the Kulaks and NEPmen were emboldened