 From then on Beloborodov was associated with the Left Opposition, centered around Leon Trotsky.After Trotsky was evicted from the Kremlin in 1927, he lodged in Beloborodov's rooms in the House of the Soviets in Granovsky Street, Moscow.Beloborodov was relieved of his duties and expelled from the Communist Party in December 1927 and exiled to northern Siberia, but recanted in 1929, and was readmitted to the party in 1930, and employed in the system of the Committee of State Purchases of the USSR.