The Politburo of the 27th Congress of the Communist Party of the Soviet Union was in session from 1986 to 1990. Composition Members Candidates References Politburo of the Central Committee of the Communist Party of the Soviet Union members 1986 in the Soviet Union 1987 in the Soviet Union 1988 in the Soviet Union 1989 in the Soviet Union 1986 establishments in the Soviet Union 1990 disestablishments in the Soviet Union