Rep. Harriet Hageman has won the Republican primary for Wyoming's open Senate seat, NBC News projects. She received the backing of former President Donald Trump, who endorsed her in December after she ousted Rep. Liz Cheney in a 2022 primary with his support. The Senate seat is open due to Sen. Cynthia Lummis' decision not to seek re-election this year. Hageman won with no specific numbers provided for her margin of victory.
Written by the local model on 2026-08-19,
using this article's own text rather than the other coverage of the
same event (that is the story summary below).
Story summary
Rep. Harriet Hageman, a Republican supported by President Donald Trump, has won the Republican primary for Wyoming's open Senate seat, NBC News projects. This victory will send her to the general election in the deep-red state. Hageman had previously won her House seat with Trump's support in 2022, when she defeated Rep. Liz Cheney in a Republican primary after Trump backed her over Cheney due to Cheney's votes against Trump and her involvement in investigating the Jan. 6 Capitol riot. This marks another instance of Hageman emerging victorious in elections where Trump has endorsed her.
Written for “Wyoming US Senate Primary” on 2026-08-31,
grounded in this article and the 0 other(s) covering the same event.
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Leaning score +0.25 for article 1214 (high confidence, 1 verified quote) · logged 2026-08-24
Rep. Harriet Hageman has won the Republican primary for Wyoming’s open Senate seat, NBC News projects, advancing to the general election in the deep-red state.
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News → win → state
Hageman had the support of President Donald Trump as she ran against four Republican opponents.
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she → have → opponents
Trump weighed in to offer his “complete and total endorsement” on Truth Social shortly after she announced her candidacy in December.
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she → weigh → December
Hageman won her House seat with Trump’s support in 2022, when she ousted Rep. Liz Cheney, a Trump critic, in a Republican primary.
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she → win → primary
Trump backed Hageman after Cheney voted to impeach him in 2021 and later joined the House committee investigating the Jan. 6 Capitol riot and spoke out forcefully against the 2021 attack.
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Cheney → back → attack
“I know Harriet well, and she is a TOTAL WINNER!” Trump wrote in his post endorsing her in this year’s election.
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Trump → know → election
“Harriet has ALWAYS delivered for Wyoming, and will continue to do so in the United States Senate.”
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Harriet → deliver → Senate
Hageman emerged from a primary field that included former Kirby Mayor Sam Mead, who partially self-funded his campaign.
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who → emerge → campaign
Cheney conceded her 2022 primary race at an event at the Mead family ranch, according to Wyoming Public Media, and Mead said he was “proud of her for standing up for the truth.”
uncertain
he → concede → truth
The Wyoming Senate seat is open this year after Sen. Cynthia Lummis, a Republican, announced in December that she would not seek re-election.
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she → announce → election
Lummis, 71, said at the time that she did “not have six more years in me.”
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she → say → me
Wyoming is a deep-red state and has not had a Democratic senator since 1962.
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Wyoming → have → 1962
Trump won more than 71% of the vote there in 2024.
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Trump → win → 2024
Hageman, too, was easily swept to re-election in 2024, securing 71% of the vote.
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Hageman → sweep → vote
Hageman was a lawyer before she served in Congress.
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she → serve → Congress
Wyoming was the least populated state as of 2020, according to U.S. census data, with just under 577,000 residents.
uncertain
Wyoming → accord → residents
