ROME - Italy held its final day of campaigning on Friday ahead of crucial elections, as international investors warned an unclear outcome could shake the economy and set off shockwaves through the eurozone. Italians will cast their ballots on Sunday and Monday as they grapple with the longest recession in two decades and austerity cuts that have caused deep resentment in the euro area’s third economy. The most likely outcome is a centre-left government led by Democratic Party leader Pier Luigi Bersani, a former communist with a down-to-earth manner who now espouses broadly pro-market economic views. “I am very, very confident of victory although we should not underestimate the right,” Bersani said i.