Kansas Senate Class II Seat Primary

Eleven Democrats and two Republicans head to the polls Aug. 4 in the Kansas Senate primary 2026, competing for the right to face off in November for the Class II U.S. Senate seat held by Republican incumbent Roger Marshall.

Kansas runs a traditional partisan primary. Republican and Democratic voters cast separate ballots on the same date, with each party's winner advancing directly to the Nov. 3 general election. There is no top-two system, no ranked-choice component, and no runoff. The general election ballot will include candidates from three parties: Republican, Democratic, and Libertarian.

Marshall, first elected to the Senate in 2020, is seeking a second term and faces only one Republican challenger. The Democratic side is far more crowded, with 11 candidates competing for a nomination in a state every major ratings organization calls solidly Republican territory.

The Candidates

Republican Primary

Roger Marshall is a physician who won the seat in 2020 and enters the Kansas Republican primary election as the clear favorite. He serves on four Senate committees: Agriculture, Nutrition, and Forestry; Finance; Budget; and Health, Education, Labor, and Pensions (HELP). His legislative record includes sponsoring the Medicare Advantage Improvement Act and the Healthy Start Reauthorization Act, and cosponsoring the Laken Riley Act.

Chase LaPorte is the only Republican challenger. No additional verified biographical information was available at time of publication.

Democratic Primary

The 2026 Senate primary Kansas Democrats are navigating is the most crowded federal primary in the state this cycle. Eleven candidates are on the ballot, but one has separated himself from the field on fundraising.

Adam Hamilton entered the race April 30, 2026, and immediately dominated the money race. The Rev. Hamilton is the senior pastor of the Church of the Resurrection, a United Methodist congregation in the Kansas City area that is the largest United Methodist church in the country. He raised $3.6 million in his first two months as a candidate, a sum that broke Kansas fundraising records, and polling of likely Democratic primary voters has shown him leading the field.

Patrick Schmidt is a Kansas state senator from Topeka, a former U.S. Naval Intelligence Officer, and a sixth-generation Kansan. He has campaigned on reducing the influence of special interests in government and argued that his legislative experience distinguishes him in a field dominated by a first-time candidate.

Anne Parelkar, an immigration attorney and former teacher from Overland Park, has cited a Roger Marshall town hall as the event that prompted her to run. She has received an endorsement from former Kansas Gov. Kathleen Sebelius.

Christy Davis is a former Kansas director for USDA Rural Development who ran for Kansas's 1st Congressional District in 2020. She has received the endorsement of the Kansas Democratic Party Progressive Caucus.

Mike Soetaert is running as a Democratic Socialists of America-aligned candidate, focusing his campaign on affordability, Medicare for All, and LGBTQ+ rights.

Also on the Democratic primary ballot: Damon Anderson, Jason Hart, Kevin Latz, Erik Murray, Sandy Spidel Neumann, and Noah Taylor.

The Money Behind the Race

Outside groups have spent $213,373 in this race through June 30, 2026, according to Federal Election Commission (FEC) data. Every dollar reported is a supportive independent expenditure — no opposition spending has been filed against any candidate.

The Senate Conservatives Fund is the top outside spender, with $164,331 directed toward Marshall. Senate Conservatives Action has added another $34,679 in support of the incumbent. Together, the two conservative-aligned committees account for $199,010 — all of it behind Marshall.

Way Back PAC is the only outside group spending on the Democratic side, putting $14,363 in support of Democratic candidate Noah Taylor.

The total outside money in the Kansas U.S. Senate race 2026 is modest by Senate standards. All $213,373 flows to just two candidates: Marshall draws roughly 93 percent of it, Taylor the remaining seven percent. Candidates in the crowded Democratic field — including frontrunner Hamilton, whose campaign has raised $3.6 million directly — have not drawn reported outside expenditures through the FEC's June 30 coverage period.

Ratings vs. Odds

Cook Political Report (as of July 1), Sabato's Crystal Ball (as of June 11), and Inside Elections (as of June 30) all rate this race Solid Republican. The consensus rating, last updated July 23, is Solid Republican across all three outlets — no daylight between them.

Kalshi prediction markets put the Republican nominee's probability of winning the general election at 82.8 percent, with Democrats at 17.2 percent, as of July 26. More than 180,000 contracts have traded on the race, reflecting substantial market activity for a contest the ratings world considers settled.

The real question Aug. 4 is which Democrat emerges to carry the party's banner in November. Hamilton's fundraising advantage is substantial — $3.6 million raised in two months against a field of 10 other candidates in a state that has not sent a Democrat to the Senate in decades. Marshall, meanwhile, faces a primary opponent in LaPorte but has drawn nearly $199,010 in outside support from conservative groups, a signal of institutional confidence heading into primary day.

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