A Utah Republican lawmaker says he has opened a bill to file articles of impeachment against the state judge overseeing Utah’s gerrymandering case, escalating the fight over the state’s congressional map.
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Rep. Matt MacPherson, R-West Valley City, wrote on X/Twitter that he has opened a bill to impeach Third District Judge Dianna Gibson.
“I have opened a bill to file articles of impeachment against Judge Gibson for gross abuse of power, violating the separation of powers and failing to uphold her oath of office to the Utah Constitution,” MacPherson wrote.
I have opened a bill to file articles of impeachment against Judge Gibson for gross abuse of power, violating the separation of powers and failing to uphold her oath of office to the Utah Constitution.
— Matt MacPherson (@UtahVote4Matt) November 11, 2025
Gibson has enraged the Republican-controlled Legislature for a series of rulings in the lawsuit challenging Utah’s congressional map. Earlier this year, she found that lawmakers unconstitutionally repealed Proposition 4 — the anti-gerrymandering ballot initiative voters approved in 2018 — and threw out the congressional map the Legislature approved in 2021.
MacPherson’s post came before Gibson’s late night ruling on Monday that the Legislature’s redrawn congressional map violated Proposition 4’s guidelines. Gibson adopted a map drawn by the plaintiffs that makes at least one of Utah’s four congressional districts more favorable to Democrats.
MacPherson did not immediately respond to a request for comment from Utah Political Watch.
Utah’s Constitution allows for the legislature to impeach a judge for “high crimes, misdemeanors, or malfeasance in office,” but it has never happened in state history. The process requires a two-thirds vote in the House to impeach, followed by a trial in the Senate. Republicans currently hold supermajorities in both chambers.
