Before revision: In the Soviet Union this position carried such titles as Chairman of the Central Executive Committee of the Union of Soviet Socialist Republics ; Chairman of the Presidium of the Supreme Soviet of the Union of Soviet Socialist Republics ; and in the case of the Soviet Russia Chairman of the Central Executive Committee of the All-Russian Congress of Soviets (pre-1922), and Chairman of the Bureau of the Central Committee of the Russian Soviet Federative Soviet Republic (1956–1966).
After revision: In the Soviet Union this position carried such titles as Chairman of the Central Executive Committee of the USSR ; Chairman of the Presidium of the Supreme Soviet of the Union of Soviet Socialist Republics ; and in the case of the Soviet Russia Chairman of the Central Executive Committee of the All-Russian Congress of Soviets (pre-1922), and Chairman of the Bureau of the Central Committee of the Russian SFSR (1956–1966).