The constitution of the Chuvash ASSR was passed in 1937. Under the Soviet system, the general organ of the state power was the unicameral parliament (Supreme Council of the Chuvash ASSR) under the control of the Communist party. Each deputy represented 8,000 inhabitants. Eleven deputies represented the Chuvash Republic on the Council of the USSR. Social control was exercised by the trade unions, which depended on the ruling party.