In November 1917 Raskolnikov with a group of Kronstadt seamen was sent to fight anti-Bolshevik insurgents in Moscow. He was elected to the Russian Constituent Assembly. On 29 January 1918 he became the deputy Narkom of "Naval Affairs". In summer 1918, he married Larisa Reisner. In July 1918, he was sent to Kazan, as the Commissar (member of Revvoeyensovet) of the Eastern Front. On the Eastern Front, he commanded (since August 1918) the Red Volga Flotilla, which participated in the Kazan Operation.