Later he joined the Russian Social Democratic Labour Party In November 1902, he was a member of the committee set up to organise the II Congress of the RSDLP , and together with Lenin and Plekhanov, he was a member of the Bureau of the Congress. When the split occurred during the Congress between Bolsheviks and Mensheviks, Krasikov joined the Bolsheviks, and stayed in Switzerland to help Lenin create a separate the Bolshevik organisation