The Five-Star Movement closed its election campaign with an upbeat rally in Rome.
Pollsters predict Sunday's legislative election will result in a hung parliament - in which Five-Star will be the largest single party,
"We are the ones that, despite all, we're working it out, says its leader Luigi Di Maio.
"And despite all, this time we can really work it out. If all of us participate and choose, then we're going to change Italy!"
The Northen League, which forms part of the centre-right alliance, is hoping to form the largest bloc.
Matteo Salvini, leader of the anti-Europe, anti-immigration League, was desperatlely trying to drum up last minute support.
"I respect everything and everyone but a religion that sees a woman has less rights than men, I don't want it in Italy, he said. "A mosque that preaches hatred I don't want in Italy."
With the polls givieng the centre right the upper hand there was a somber tone at the Democratic Party rally.
Despite their efforts to rally the troops they are expected to come a poor third.