Rosatellum, officially known as the Italian Electoral Law of 2017, Is an additional member system with 36% of seats allocated using Plurality Voting and 64% of seats used to create a proportional legislature. The new electoral law was supported by the current government's Democratic Party and the coalition partner Popular Alternative, but also by the opposition parties Forza Italia, Lega Nord and Liberal Popular Alliance. However, two parties (the Five Star Movement and the Democratic and Progressive Movement) did not support the new electoral system. The electoral law was approved on the 12th October by the Chamber of Deputies with 375 votes in favor and 215 against and on 26 October by the Senate with 214 votes against 61.