Secretariat of the Communist Party of the Soviet Union the CPSU, who was also a Politburo member, was the leader of the Secretariat and of the Party. Dual membership in the Secretariat and the Politburo was in practice reserved for two or three very senior members of the Soviet leadership, and in the post-Stalin era (after March 1953) was a stepping-stone to ultimate power. The last five Soviet leaders (Nikita Khrushchev, Leonid Brezhnev, Yuri Andropov, Konstantin Chernenko and Mikhail Gorbachev) were all senior Secretaries before becoming First or General Secretaries. Additionally, Georgy Malenkov was briefly reckoned as the leader of the Party for a week after Stalin's death by
Constitution of the Soviet Union Constitution of the Soviet Union There were three versions of the constitution of the Union of Soviet Socialist Republics, modeled after the 1918 Constitution established by the Russian Soviet Federative Socialist Republic (RSFSR), the immediate predecessor of the Soviet Union. These three constitutions were: These constitutions had most provisions in common. These provisions declared the leadership of the working class and, in the latter two, the leading role of the CPSU in government and society. All the constitutions upheld the forms of social property. Each of the constitutions called for a system of soviets, or councils, to exercise governmental authority.