Italians are voting in a referendum which could have a big impact on the future of the Euro.
The vote, called by Prime Minister Matteo Renzi, is on reforms giving greater powers to central government.
He says he will resign if he loses.
That could hand power to the opposition "Five Star Movement" who want to leave the Euro zone.
Italian journalist Cristina Marconi says the No vote is leading in the polls, but that may be misleading: "Actually a lot of people might be voting for yes, but not saying it because it is kind of unfashionable to vote for yes because of the critique saying it is fascist, it is liberal reform."