In certain states under Marxist constitutions of the constitutionally socialist state type inspired by the former Union of Soviet Socialist Republics (USSR) and its constitutive Soviet republics, real political power belonged to the sole legal party. In these states, there was no formal office of head of state, but rather the leader of the legislative branch was considered to be the closest common equivalent of a head of state as a natural person. 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"; 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). This position may or may not have been held by the de facto Soviet leader at the moment. For example, Nikita Khrushchev never headed the Supreme Soviet but was First Secretary of the Central Committee of the Communist Party (party leader) and Chairman of the Council of Ministers (head of government).