Former State Duma member and State Duma candidate Vladimir Ryzhkov speaks during the n United Democratic Party "Yabloko" pre-election congress in Moscow, Russia, on July 3, 2016. The new State Duma will be elected on Sept. 18. (Xinhua/Pavel Bednyakov)

State Duma member Dmitry Gudkov speaks during the Russian United Democratic Party "Yabloko" pre-election congress in Moscow, Russia, on July 3, 2016. The new State Duma will be elected on Sept. 18. (Xinhua/Pavel Bednyakov)

Grigory Yavlinsky, the 2018 Russian presidential election candidate of Yabloko party, speaks during the Russian United Democratic Party "Yabloko" pre-election congress in Moscow, Russia, on July 3, 2016. The new State Duma will be elected on Sept. 18. (Xinhua/Pavel Bednyakov)