Originally, the legislative authority was vested in the Central Executive Committee of Ukraine that for many years was headed by Grigoriy Petrovsky. Soon after publishing the Stalin Constitution, the Central Executive Committee was transformed into the Supreme Soviet, which consisted of 450 deputies. The Supreme Soviet had the authority to enact legislation, amend the constitution, adopt new administrative and territorial boundaries, adopt the budget, and establish political and economic development plans. In addition, parliament also had to authority to elect the republic's executive branch, the Council of Ministers as well as the power to appoint judges to the Supreme Court. Legislative sessions were short and were conducted for only a few weeks out of the year. In spite of this, the Supreme Soviet elected the Presidium, the Chairman, 3 deputy chairmen, a secretary, and couple of other government members to carry out the official functions and duties in between legislative sessions. The Presidium was a powerful position in the republic's higher echelons of power, and could nominally be considered the equivalent of head of state, although most executive authority would be concentrated in the Communist Party's politburo and its First Secretary.