The Liberal Democratic Party of the Soviet Union (Russian: Либерально-Демократическая Партия Советского Союза (ЛДПСС) Liberal’no-Demokraticheskaya Partiya Sovetskava Soyuza (LDPSU) was a political party in the Soviet Union. The party preceded the modern-day Liberal Democratic Party of Russia. Due to the monoply of power had by the Communist Party of the Soviet Union the party had few members.