Senate Majority Whip John Barrasso has endorsed Rep. Harriet Hageman to succeed retiring Sen. Cynthia Lummis, a development first reported to Semafor. In a video message, Barrasso credited Hageman with cutting regulations and taxes, boosting Wyoming energy production, and expanding rural health care funding. President Trump previously backed Hageman, whose 2022 victory over Liz Cheney after Cheney's break with Trump following Jan. 6 helped position her as the leading candidate.
Barrasso Endorses Harriet Hageman for Wyoming Senate — Strengthening Her Bid to Replace Lummis

Senate Majority Whip John Barrasso (R-Wyo.) has publicly endorsed Rep. Harriet Hageman (R-Wyo.) to succeed the retiring Sen. Cynthia Lummis, according to reporting first shared with Semafor. The endorsement, delivered in a video message set to be released this morning, further consolidates Hageman's position as the leading Republican contender for the seat.
In the video, Barrasso praises Hageman's record in Wyoming, saying she has been 'critical' to efforts to cut regulations and taxes, expand energy production in the state, and increase funding for rural health care. He added that Hageman would be 'a leader that you can trust to advance President Trump’s America First agenda' in the Senate.
President Donald Trump had previously endorsed Hageman, and Barrasso's support is likely to amplify her standing with conservative voters and party leaders. Hageman rose to national prominence after defeating former Rep. Liz Cheney in Wyoming's 2022 GOP primary — a contest that followed Cheney's public break with Trump over the Jan. 6, 2021, attack on the U.S. Capitol.
The endorsement underscores how intra-party dynamics since 2021 continue to shape Republican contests. While the seat is not officially decided, support from senior GOP figures like Barrasso and Trump positions Hageman as a frontrunner to replace Lummis when she departs the Senate.
Context
Semafor was first to report details of Barrasso's endorsement. With two high-profile endorsements in place, Hageman enters the Senate contest with significant backing from the party's conservative leadership and allies.
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