Vladimir Putin, the Russian prime minister, has cast his vote in an election that he is widely expected to win.<br /><br />Putin was first elected Russia's president from 2000 to 2008, but was barred by the constitution from standing for a third consecutive term. He has spent the last four years as prime minister, under President Dmitri Medvedev, but is now expected to return to the top job.<br /><br />This election is being held against a backdrop of many anti-Putin protests, sparked by allegations of widespread fraud during December's parliamentary elections. <br /><br />Al Jazeera's Jonah Hull reports from Moscow, the Russian capital.
