The 17th Politburo was elected at the 1st Plenary Session of the 17th Central Committee, in the aftermath of the 17th Congress. Outwardly, the Politburo remained united, but on 4 February Grigory Ordzhonikidze, the People's Commissar for Heavy Industry, refused to acknowledge Stalin's projected economic growth targets, claiming that the majority in the Politburo supported his position. Sergey Kirov, who had turned down an offer to take Stalin's place as General Secretary before the 17th Congress, opposed many of Stalin's repressive policies, and tried throughout 1934 to moderate them. Several scholars have viewed Ordzhonikidze's and Kirov's outspokenness as the rise of a moderate Stalinist faction with the party. On 1 December 1934, Kirov was shot dead – whether he was the victim of a madman or killed on Stalin's orders remains unknown. Not long after, on 21 January 1935, Valerian Kuybyshev died of natural causes, and a month later, Anastas Mikoyan and Vlas Chubar were elected Politburo full members. Andrei Zhdanov, the First Secretary of the Leningrad City Committee and member of the Secretariat, and Robert Eikhe, the First Secretary of the Siberian and West-Siberian District Committee, were elected Politburo candidate members.