Italian Prime Minister Matteo Renzi has resigned after suffering a heavy defeat in a referendum over his plan to reform the constitution.In a late-night news conference, he said he took responsibility for the outcome. He said the No camp must now make clear proposals.An exit poll for state broadcaster RAI suggests 42-46% voted to back reform, compared with 54-58% voting No. The first projections based on the official count point to a wider defeat. Early indications have the Yes vote at 39-43% and the No at 57-61%.‘Good luck to us all,’ Mr Renzi told reporters. He said he would tell a Cabinet meeting on Monday afternoon that he was resigning, and then tender his resignation to the Italian president after two-and-a-half years in office.The president is expected to ask him to stay on at least until parliament passes a budget bill later this month.Mr Renzi said the reforms he proposed would have cut Italy`s bureaucracy and made the country more competitive.But the referendum was widely seen as a chance to register discontent with the prime minister. Source: BBC