Sen. Chuck Schumer strongly backed Abdul El-Sayed after the progressive candidate’s slim victory in the Michigan primary and vowed that the Democratic “big tent” approach to intraparty feuds will succeed in taking back the Senate in the fall midterms.

The Senate Democratic leader told Punchbowl News he is 100% behind the newly minted nominee, even though the party’s political operation backed rival Rep. Haley Stevens in a contentious primary that El-Sayed narrowly won this week.

“What people don’t understand is that a big tent is a strength, not a weakness,” Schumer said. “It’s how you build a majority.”