Webcams and worried voters: Inside a Moscow polling station

Polling stations across Russia have opened as the presidential election gets under way.

Vladimir Putin is hoping to become president again after four years as prime minister. He faces four challengers, three of whom he has defeated in previous elections.

The election is being held against a backdrop of popular discontent, sparked by allegations of widespread fraud during December's parliamentary elections in favour of Mr Putin's United Russia party.

The BBC's Steve Rosenberg looks around a polling station in Moscow, which has been fitted with webcams in an attempt to allay fears about vote rigging.

The candidates are Vladimir Putin, Gennady Zyuganov, Vladimir Zhirinovsky, Mikhail Prokhorov, and Sergey Mironov