House Speaker Kevin McCarthy cautioned members of his caucus against failing to coalesce behind a government spending bill on Sunday, warning about the impact a government shutdown could have for the party.

“I’ve been through shutdowns, and I’ve never seen somebody win a shutdown. Because when you shut down, you give all your power to the administration,” McCarthy said Sunday during an interview on Fox News’ “Sunday Morning Futures” with host Maria Bartiromo.

McCarthy is facing concurrent challenges as he attempts to placate his right flank while holding onto support from mainstream Republicans in the House. The Republican leader seemingly lacks the votes to pass a stopgap bill to keep the government open past Sept. 30. And despite attempts to reel in support from hardliners by opening an impeachment inquiry into President Joe Biden, some conservatives are still threatening to force a vote stripping him of the speakership.