Rep. John Larson (D-Conn.) was defeated by his primary challenger, former Hartford Mayor Luke Bronin, on August 11, 2026, according to the Associated Press. Larson is the seventh House Democrat to lose in a primary this year, marking a notable trend in incumbent losses. Bronin's challenge followed Larson's publicized health incident during a House speech, which he attributed to a complex partial seizure.
Bronin received support from the state Democratic Party, while Larson was backed by House Minority Leader Hakeem Jeffries and Connecticut's congressional delegation. Financially, Bronin raised $3.1 million compared to Larson's $2.7 million, with significant backing from VoteVets, which supported Bronin's campaign. Larson's main financial supporter was Defend the Vote, which spent over $500,000 on his behalf.
Bronin's campaign emphasized the need for generational change within Congress and the Democratic Party. He stated, "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." The election results reflect a broader trend of older Democratic incumbents losing to younger challengers, with several other notable incumbents also facing defeats this year.