| Date |
Comments |
| 5 April 1920 |
Lev Kamenev, Nikolay Krestinsky, Vladimir Lenin, Joseph Stalin and Leon Trotsky elected full members; Nikolai Bukharin, Grigory Zinoviev and Mikhail Kalinin elected candidate members. |
| 16 March 1921 |
Zinoviev, Kamenev, Lenin, Stalin and Trotsky elected full members; Bukharin, Kalinin and Vyacheslav Molotov elected candidate members. |
| 3 April 1922 |
Zinoviev, Kamenev, Lenin, Alexei Rykov, Stalin, Mikhail Tomsky and Trotsky elected full members; Bukharin, Kalinin and Molotov elected candidate members. |
| 26 April 1923 |
Zinoviev, Kamenev, Lenin, Rykov, Stalin, Tomsky and Trotsky elected full members; Bukharin, Kalinin, Molotov and Jānis Rudzutaks elected candidate members. |
| 21 January 1924 |
Lenin dies. |
| 2 June 1924 |
Bukharin, Zinoviev, Kamenev, Rykov, Stalin, Tomsky and Trotsky elected full members; Felix Dzerzhinsky, Kalinin, Molotov, Rudzutak, Grigori Sokolnikov and Mikhail Frunze elected candidate members. |
| 31 October 1925 |
Frunze dies. |
| 1 January 1926 |
Bukharin, Kliment Voroshilov, Zinoviev, Kalinin, Molotov, Rykov, Stalin, Tomsky and Trotsky elected full members; Dzerzhinsky, Kamenev, Grigory Petrovsky, Rudzutak and Nikolai Uglanov elected candidate members. |
| 20 July 1926 |
Dzerzhinsky dies. |
| 23 July 1926 |
Zinoviev relieved of duties; Rudzutak elected full member; Andrei Andreyev, Lazar Kaganovich, Kamenev, Sergey Kirov, Anastas Mikoyan, Grigory Ordzhonikidze, Petrovsky and Uglanov elected candidate members. |
| 23 October 1926 |
Trotsky and Kamenev relieved of duties at the joint plenum of the Central Committee and the Central Control Commission. |
| 3 November 1926 |
Ordzhonikidze relieved of duties at the joint plenum of the Central Committee and the Central Control Commission; Vlas Chubar elected candidate member. |
| 19 December 1927 |
Bukharin, Voroshilov, Kalinin, Valerian Kuybyshev, Molotov, Rykov, Rudzutak, Stalin and Tomsky elected full members; Andreyev, Kaganovich, Kirov, Stanislav Kosior, Mikoyan, Petrovsky, Uglanov and Chubar elected candidate members. |
| 29 April 1929 |
Uglanov relieved of duties; Karl Bauman elected candidate member. |
| 21 June 1929 |
Sergei Syrtsov elected candidate member. |
| 17 November 1929 |
Bukharin relieved of duties. |