Italy's centre-left has chosen the man it wants to be the country's next prime minister. Pier Luigi Bersani won Sunday's run-off vote, to become one of the main candidates for leader in the 2013 election. And with the centre-right in disarray over whether Silvio Berlusconi will run again, polls put Bersani's Democratic Party well ahead. Al Jazeera's Claudio Lavanga reports from Rome.