The 1927 program of the United Opposition which drew together the supporters of Trotsky and Zinoviev against Stalin and Bukharin. Submitted to the Central Committee in September 1927, the program was signed by thirteen members of the Central Committee, including Trotsky, Zinoviev, Kamenev, Smilga, Evdokimov, Rakovsky, Piatakov and Bakaev.