MOSCOW, June 9 United Russia Party «may nominate a candidate for mayor of Moscow, in addition to the current mayor Sergei Sobyanin, State Duma Vice Speaker Pyotr Tolstoy, his candidacy was proposed to be included in the ballot for secret ballot, the correspondent reports. nomination of a candidate for the post of mayor of the city of Moscow, Sergei Semenovich Sobyanin and Petr Olegovich Tolstoy,» said Viktor Seliverstov, deputy head of the United Russia faction in the State Duma, during the XXVlll conference of the Moscow city branch of United Russia.