Democrat Adam Hamilton wins Kansas Senate seat, ousting Roger Marshall

Democrat Adam Hamilton has defeated Republican Sen. Roger Marshall in Kansas, becoming the first Democrat elected to the state’s U.S. Senate delegation since 1932. The result flips a seat in a state Donald Trump carried by 16 points in 2024 and gives Democrats a boost in their fight for a Senate majority.

Hamilton, 62, leads the country’s largest United Methodist congregation, the Church of the Resurrection in the Kansas City area. He had never held public office and was registered as a Republican until earlier this year, according to NBC News. Running as an “independent-minded Democrat,” he emphasized affordability, listening to voters across party lines and bringing one senator from each party to represent Kansas. Its other senator is Republican Jerry Moran.

Marshall, 66, was seeking a second Senate term after winning his first by more than 11 points in 2020. An obstetrician-gynecologist before entering Congress, he served two terms in the House. He generally supported Trump’s agenda, though he criticized aspects of the administration’s immigration enforcement during the campaign.

A race that initially appeared unlikely to threaten the Republican incumbent grew competitive as voters faced rising costs. Hamilton and his allies blamed high prices on the war with Iran and Trump’s tariffs, and criticized healthcare cuts in legislation Republicans enacted last year. Rising diesel and beef prices hit Kansas agriculture particularly hard, NBC News reported. The Guardian said high fuel and fertilizer prices also weighed on agriculture-heavy areas.

Democrats pointed to Marshall’s repeated votes against resolutions to halt the Iran conflict until Congress authorized it. They also cited his comment in April, when he said national security was “even more important than your pocketbook” in response to rising gas prices.

Marshall faced scrutiny over his former medical practice. The New York Times reported that he sued hundreds of patients over unpaid bills, with dozens facing arrest warrants after missing court dates. CBS News said the investigation found lawsuits against more than 700 patients. Marshall’s lawyer said Marshall set an 18% interest rate on the bills but had no involvement in warrants or arrests, according to NBC News. Marshall called the story a “hit job.” NPR reported that a former patient featured in a Hamilton campaign ad sued Marshall five days before Election Day, alleging a predatory interest rate.

The campaign also brought allegations against Hamilton. NPR reported that Marshall’s campaign ran an ad claiming Hamilton had protected a church camp volunteer accused of attempting to sexually abuse boys. Court records showed the church’s investigation of an initial report was inconclusive, NPR said. Hamilton said he was not involved in allowing the volunteer to return the following year, when another incident was reported, and that church leaders should have called police after the first report.

National Republican groups redirected millions of dollars to defend Marshall, while Democratic groups ran ads of their own. Trump rallied in Kansas in late October, The Guardian reported. Hamilton drew endorsements from former Republican Govs. Bill Graves and Mike Hayden. NPR reported that the contest became the most expensive in Kansas history, with Hamilton breaking multiple fundraising records.

The victory ends a long Democratic drought in Kansas Senate elections, though Democrats have won other statewide races. Laura Kelly, a Democrat, has served two terms as governor.