High Quality Content by WIKIPEDIA articles! The Social Democratic Party of Russia (Russian: Социал-демократическая партия России, Sotsial-demokraticheskaya partiya Rossii) was a political party founded in Russia by Mikhail Gorbachev on November 26, 2001. First name of party is: Social Democratic Party of Russia (United). It was a coalition of several social democratic parties, had approximately 12,000 members, but had no seats in the Russian State Duma. Gorbachev resigned as party leader in May 2004 over a disagreement with party chairman Konstantin Titov who had insisted, over Gorbachev`s opposition, on a deal with the pro-Kremlin United Russia Party in the previous year`s general election.