"United Russia" promises to implement Putin's plan even after he leaves the presidency The main contender for victory in the December Duma elections, United Russia, will hold its pre-election congress, the last of all major parties, on October 1 and 2. More than 500 delegates and over 2,500 guests will take part in the congress, including members of the Federation Council and State Duma deputies, representatives of federal authorities, heads of Russian regions and prominent public figures.