A Russian MP who turned against President Putin has been voted out of the lower house of parliament, the Duma.

Gennady Gudkov was expelled by 291 votes to 150.

Gudkov became a central figure in Russia’s opposition particularly after elections last year that were suspected of being manipulated.

He likened his expulsion to a Stalin show-trial.

Gudkov’s supporters said it showed Putin is determined to crush dissent.