Utah state Rep. Karianne Lisonbee has secured endorsements from 37 fellow House Republicans and several state senators as she mounts a primary challenge against incumbent Rep. Blake Moore, signaling growing conservative unrest within the GOP.

Lisonbee, a longtime Davis County resident and former Utah House majority whip, has built a reputation as a staunch conservative, earning high marks from pro-life and Second Amendment groups. Her legislative record includes efforts to cut taxes, strengthen election security, and promote government transparency. “I’ve worked shoulder to shoulder with these friends as I’ve been a champion for life, the Second Amendment, balanced budgets, oversight, and transparency,” Lisonbee said.

The endorsements include backing from House leadership and a majority of her GOP colleagues, along with five state senators, in what supporters described as a strong vote of confidence in her conservative record and leadership. “Karianne is the right choice to represent Northern Utah in Congress,” the group said in a joint statement, praising her “work ethic, integrity, and guiding principles” and calling her a “conservative champion who gets things done.”

The primary challenge comes in Utah’s newly drawn 2nd Congressional District, a race increasingly shaped by intraparty tensions over redistricting. Moore, a member of House GOP leadership, has faced criticism for his involvement in a 2018 anti-gerrymandering initiative that led to a court-imposed map. Some conservatives argue the resulting map could give Democrats a rare foothold in the state. Lisonbee and her allies have positioned themselves as defenders of stronger conservative leadership to protect Republican representation.

While Moore retains high-profile endorsements from President Donald Trump and House Speaker Mike Johnson, growing support for Lisonbee reflects unrest within the GOP base. Political observers say the race has national implications, serving as an early test of how Republicans navigate internal divisions while facing increasing Democratic pressure in competitive districts. Lisonbee emphasized her local roots, branding herself as “Northern Utah’s candidate” in contrast to critics who portray Moore as out of step with the district.

With the primary approaching, Lisonbee’s wave of endorsements positions her challenge as one of Utah’s most closely watched Republican contests and a potential indicator of the party’s future direction.