TY JOUR TI A Comparative Analysis of the Party Systems in the USSR and Modern Russia: A Return to a One-Party System KW political parties KW party systems KW CPSU KW "United Russia," political dominance KW dominant party KW multiparty system. JO Journal of Political Research AU Yaroshenko, A.S. PY 2025 IS 9 PB INFRA-M Academic Publishing LLC.