Who Will Win Kansas Senate Race? Hamilton vs. Marshall Midterm Predictions & Analysis

Grant Mitchell - News Editor
Grant Mitchell • News Editor 5+ years betting experience
Updated: Nov 3, 2026 , 04:15 PM ET • 3 min read

Kalshi prediction markets favor Democrat Adam Hamilton over Republican Roger Mashall in the Texas Senate race. Here’s our prediction for who will win.

Kansas Democratic candidate for U.S. Senate Adam Hamilton talks during a debate at the Kansas State Fair in Hutchinson, Kansas, on Sept. 12, 2026.
Photo By - Reuters Connect.

Prediction markets favor Kansas’ Adam Hamilton (D) to beat Roger Marshall (R) in a topsy-turvy race for a U.S. Senate seat.

Industry leader Kalshi showed the race completely flipped toward the end of October, and Hamilton is now pulling ahead.

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Key Takeaways
  • Hamilton was a sizable underdog at Kalshi less than one week ago
  • Marshall is the incumbent and supports a farm bill that is popular with many Kansas residents
  • The race produced over $11.3 million in trades as of Tuesday morning

Marshall, the incumbent, only has a 35% chance of winning his spot back in the Senate at Kalshi on the morning of the midterm elections. That’s despite him being listed at around 61% less than one week ago.

Hamilton (65%) has earned prediction traders' favor for several reasons. Criticism of Marshall, a former OB-GYN, stemmed from his lawsuits against former patients for unpaid medical bills. President Donald Trump, a fellow Republican, also made misleading claims about Hamilton, while Republican control of Congress over the last couple of years could not prevent a rapid increase in the cost of living.

Hamilton himself is a preacher at the nation’s largest United Methodist congregation. He has no background in politics but has become popular for his centrist ideas.

At Kalshi, more than $12 million has been traded on who would win the race as of 5 p.m. ET on Election Day.

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Hamilton (D) vs. Marshall (R) prediction

Hamilton believes in ending tariffs and the war in Iran. He also wants to restore ACA premium tax credits, reverse Medicaid cuts, and expand Medicare drug pricing to private insurance companies.

Marshall believes in security through a strong southern border. He’s also strongly backing a farm bill supporting crop insurance and rural development, among other measures.

Hamilton outperformed Marshall in polling averages, 48.6-45.2%. He also represents the “new” part of a Blue Wave that often follows Republican congressional control, which makes him a strong pick to win his campaign.

My pick for Hamilton vs. Marshall: Hamilton ($0.65) | TRADE THIS MARKET ON KALSHI

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More midterm election battleground states odds

Senate control races and Governors’ Mansion races across America will come down to key battleground states. With statewide races heating up everywhere, many key states have plenty of interesting races.


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Grant Mitchell - News Editor
News Editor

Grant jumped into the sports betting industry as soon as he graduated from Virginia Tech in 2021. His fingerprints can be found all over the sports betting ecosystem, including his constant delivery of breaking industry news. He also specializes in U.S. politics. Having studied political science, Grant has provided coverage on presidential elections, mayoral shifts, and midterm elections.

He also prides himself on finding the best bets for a variety of sports thanks to his analytical approach to sports and sports betting.

Before joining Covers, Grant worked for a variety of reputable publications, led by Forbes.

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