Trump-Backed Harriet Hageman Wins Wyoming GOP Senate Primary
Rep. Harriet Hageman won Wyoming's Republican primary for U.S. Senate on Tuesday, August 18, 2026, positioning her to replace retiring Sen. Cynthia Lummis and become the heavy favorite in November's general election.[1]
President Donald Trump endorsed Hageman in December 2025, and she also drew backing from the Wyoming GOP and the U.S. Chamber of Commerce.[1] Sen. Cynthia Lummis formally endorsed Hageman in January 2026 as she prepared to run for the open seat.[1]
In 2022 Hageman unseated Rep. Liz Cheney in a GOP House primary by a wide margin after embracing former President Trump's claims that the 2020 election was fraudulent.[1] That victory reshaped Wyoming Republican politics and positioned her to seek the Senate after Lummis announced her retirement.[1]
Wyoming's strong Republican tilt makes Hageman an overwhelming favorite to win the Senate seat in November, a result that would keep the seat in GOP hands and reflect Mr. Trump's continued influence over the party in deep-red states.[1]
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📌 Key Facts
- On Tuesday, August 18, 2026, Rep. Harriet Hageman won Wyoming's Republican primary for U.S. Senate, according to the Associated Press.
- Hageman is running to replace retiring Republican Sen. Cynthia Lummis, who endorsed her in January 2026.
- President Donald Trump endorsed Hageman in December 2025, and she also received backing from the Wyoming GOP and the U.S. Chamber of Commerce.
- Wyoming is one of the most conservative U.S. states, making Hageman an overwhelming favorite in the November general election.
- Hageman previously defeated Rep. Liz Cheney by more than 37 points in the 2022 GOP House primary after embracing Trump's 2020 election-fraud claims.
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