Voting has now started in Zaporizhzhia, a Russian-held region in eastern Ukraine.
The Kremlin is expected to use the vote to justify the annexation of four regions including Zaporizhzhia, Kherson, Luhansk and Donetsk.
Vladimir Rogov, an official in the Russian-backed administration of that region, said: “Voting has started in the referendum on Zaporizhzhia region becoming a part of Russia as a constituent entity of the Russian Federation! We are coming home! Godspeed, friends!”