15th Congress of the All-Union Communist Party (Bolsheviks)
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The 15th Congress of the All-Union Communist Party (Bolsheviks) was held during 2–19 December 1927 in Moscow. It was attended by 898 delegates with a casting vote and 771 with a consultative vote.[1] The congress ended an inner-party struggle, as Leon Trotsky, Gregorii Zinoviev and other opponents of Joseph Stalin were expelled from the party.[2]