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Officially he was merely one of the members of the higher party organs: the Central Committee, which in the early twenties had about twenty-five full members and fifteen or so non-voting candidate members, and the Politburo. The latter in 1922 had a membership of ten (Lenin, Trotsky, Kamenev, Zinoviev, Stalin, Alexei Rykov, and Mikhail Tomsky, with Bukharin, M. I. Kalinin, and Viacheslav Molotov as candidate members). In filling out a questionnaire as a delegate to the Tenth Party Congress only a year earlier, Lenin gave his party office as “member of the Central Committee
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Robert C. Tucker (Stalin as Revolutionary: A Study in History and Personality, 1879-1929)