(see related)Rome, January 11 - The co-chair of an anti-reform committee in parliament said Monday enough lawmakers are on board to request a referendum. "We have the certainty that at least 126 MPs will ask for the referendum" to strike down Premier Matteo Renzi's Constitutional reforms, said MP Alfiero Grandi. The anti-reform committee was officially launched earlier in the day to prevent "2016 from becoming the year of the end of the Republic born 70 years ago," its supporters said. The anti-reform referendum is being promoted by Italian Left (SI) - a splinter from Renzi's Democratic party - and the anti-establishment 5-Star Movement (M5S). Renzi's reform bill would change the Constitution by making the Senate into a slimmer body with limited lawmaking powers, thus streamlining Italy's notoriously slow and costly political machinery.