A bill to revise regulations on the handling of political funding cleared the Lower House on Thursday, marking a watershed moment in a monthslong debate sparked by a large-scale financial scandal that engulfed the ruling Liberal Democratic Party.

The LDP bill received the backing of Komeito — the junior partner in the ruling coalition — and the opposition Nippon Ishin no Kai, amid widespread resistance from other opposition parties.

The bill will now move to the Upper House, where it’s set for a final vote by June 23 when the current session of parliament draws to a close.