Wyoming Republican Senator Cynthia Lummis announced on Friday she will not seek re-election in 2026, stating the energy required for another term does not align with her current capacity.

“In an incredible honor to represent Wyoming in the U.S. Senate, and throughout my time here, Wyoming has been my one-and-only priority,” Lummis said in a statement posted on X. “Deciding not to run for reelection represents a change of heart for me, but during the difficult, exhausting session weeks this fall I’ve come to accept that I do not have six more years left in me.”

The senator added, “I am a devout legislator, but I feel like a sprinter in a marathon.” Lummis, sworn in January 3, 2021, is the first woman to serve as a senator for Wyoming. Senate Majority Whip Sen. John Barrasso (R-WY) praised her legacy, stating, “Cynthia Lummis is a perfect senator for Wyoming. From Miss Frontier Days to the Wyoming Legislature to the U.S. House of Representatives and the U.S. Senate – Cynthia has never stopped fighting for the people of Wyoming.” He continued, “Cynthia is a straight shooter and a trailblazer. We’re going to miss her infectious energy and iconic laugh in the halls of the U.S. Senate. I’m grateful we have another year to work side by side serving the people of Wyoming.”

Lummis’s decision makes her the fifth Republican senator to exit next year, joining Sens. Joni Ernst (Iowa), Mitch McConnell (Ky.), Thom Tillis (N.C.) and Tommy Tuberville (Ala.). Rep. Harriet Hageman (R-Wyo.) is considered a top-tier candidate to fill her seat. No Democrat has held a Senate seat in Wyoming since 1977.