Rep. John Larson ouster makes 2026 a record year for Democratic primary losses

Rep.

John Larson (D-Conn.) was unseated Tuesday by his primary challenger, former Hartford Mayor Luke Bronin , according to the Associated Press.

Why it matters: Larson is the 7th House Democrat ousted in their primary this year .

Only one other election cycle in the 21st century has seen this many incumbent losses in primaries.

Bronin's challenge to Larson came after the 78-year-old incumbent suffered a widely publicized freeze-up during a House floor speech that he later said was the result of a complex partial seizure .

Bronin earned the support of the state Democratic Party, while Larson had the backing of House Minority Leader Hakeem Jeffries (D-N.Y.) and the rest of Connecticut's congressional delegation.

State of play: Bronin, 47, proved to be a prodigious fundraiser , bringing in $3.1 million as of July 22 to Larson's $2.7 million over the same period, according to Federal Election Commission filings.

Bronin also had the most support from an outside backer: VoteVets, a group that works to elect Democratic military veterans, said in FEC filings it spent over $1 on ads boosting the retired Navy intelligence officer.

Larson's top outside spender was Defend the Vote, a Democratic group whose stated mission is to elect a "pro-democracy" majority in Congress.

They spent just over $500,000.

Between the lines: Bronin ran a campaign that focused heavily on the need for generational change in Congress and the Democratic Party.

"John Larson is a good man, but he's been in Congress since the 90s.

The stakes are just too high to keep doing the same thing," Bronin said in one ad .

Both men also tried to burnish their progressive credentials at a time when Democrats are increasingly favoring progressives in safe-seat primaries.