Italians headed to the polls overnight NZT in a widely watched vote that will offer a measure of the power of the anti-establishment populists who have been campaigning against traditional parties across Europe.
After a campaign riven by angry attitudes toward migrants and pessimism about Italy's economic prospects, voters will have a chance to register their discontent at the ballot box.
Ahead of the vote, the country's political landscape was fragmented by the rise of parties that exist outside the left-right spectrum that has dominated politics in European countries since World War II. Many leaders and analysts question whether there will be enough support for any one force to put together a governing coalition.
Italian politics are famously chaotic, and prime ministers have rarely stayed in office for their full five-year mandates. But this year is notable for a feeling of a breakdown of the old system and a sense that what is happening here could be the future for other countries around Europe.
Combined, the old-line centre-left and centre-right parties are capturing less than 40 per cent of voters, according to opinion polls, with the rest of voters undecided or preferring other parties.