High Quality Content by WIKIPEDIA articles! The Russian Social Democratic Labour Party (Mensheviks) (Russian: Российская социал-демократическая рабочая партия (меньшевиков)) was a political party in Russia. It emerged in 1912, as the Russian Social Democratic Labour Party was divided into two (the other group being the Russian Social Democratic Labour Party (Bolsheviks)). The Mensheviks and Bolsheviks had, however, existed as factions of the original party since 1903.