ST. LOUIS — Representative Wesley Bell defeated former Representative Cori Bush in Missouri's 1st Congressional District Democratic primary Tuesday, securing the nomination in a deep-blue St. Louis-based district he is virtually certain to hold after November.

The race was a rematch of the 2024 primary, where Bell unseated Bush by 5.5 percent — fewer than 7,000 votes. Bush, a progressive member of the Democratic Socialists of America, sought to reclaim the seat by framing the contest as a referendum on Bell's support for U.S. foreign policy.

The American Israel Public Affairs Committee spent millions of dollars backing Bell, flooding the airwaves and overwhelming Bush's messaging operation. AIPAC's investment proved decisive in a race where spending disparities were stark.

Bush's loss removes a prominent progressive voice from Congress. She had been a member of the informal "Squad" within the House Democratic caucus, known for left-leaning policy stances.

Bell's win continues a pattern of moderate Democrats defeating progressive challengers in primaries where AIPAC has intervened heavily. His victory also demonstrates that a pro-Israel stance can hold in Democratic primaries even against candidates with strong grassroots support.

With the primary over, Bell turns to the general election. Missouri's 1st Congressional District has elected Democrats for decades, giving him a clear path to a second term.