After the October Revolution, the Bolsheviks, the Left SRs, and the Menshevik-Internationalists formed a Socialist coalition government that lasted until March 1918 (Historical Dictionary of the Russian Revolution. J. Davis. p. 58); the Mensheviks were allowed to legally hold a congress in 1920 and continued to be elected to the Congress of Soviets until being outlawed in 1921 (Lenin's Legacy. R. Wesson, 1978).