Four House Republicans joined Democrats Wednesday to force a House vote on a straight three-year extension of the enhanced Obamacare tax credits that will expire Dec. 31, delivering a sharp rebuke to Speaker Mike Johnson and other GOP leaders.

Reps. Brian Fitzpatrick of Pennsylvania, Mike Lawler of New York, Rob Bresnahan of Pennsylvania and Ryan Mackenzie of Pennsylvania signed the discharge petition filed by House Minority Leader Hakeem Jeffries — hours after House GOP leaders rejected attempts by Fitzpatrick and other Republican moderates to seek a floor vote on extending the subsidies used by more than 20 million Americans.

Fitzpatrick said in a late-night House Rules Committee meeting Tuesday that “the only thing worse than a clean extension ... would be expiration, and I would make that decision.” Lawler added that “the only feasible path forward is a discharge petition” if GOP leader reject a floor vote.

Under House rules, a discharge petition is subject to a waiting period, meaning no vote could happen until next month — though Johnson could choose to move sooner.