The Bolsheviks (Russian: Большевики, from большинство "bolshinstvo", 'majority'), also known in English as the Bolshevists, were a radical, far-left, and revolutionary Marxist faction founded by Vladimir Lenin and Alexander Bogdanov that split from the Menshevik faction of the Marxist Russian Social Democratic Labour Party (RSDLP), a revolutionary socialist political party formed in 1898, at its Second Party Congress in 1903.