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Trump had backed Megan Degenfelder, Wyoming's Superintendent of Public Instruction, in the Republican primary for governor, part of a wider pattern of the president endorsing candidates in state and congressional races across the country. She lost to State Senator Eric Barlow, a fellow Republican who ran without that endorsement.

Wyoming is a heavily Republican state, so its primary effectively decides who becomes governor once the general election is held. Presidential endorsements are usually seen as a major boost in Republican primaries, given Trump's influence over the party's base, which is why the outcome of endorsed races is closely watched.

This defeat is being noted because it follows other instances this year of candidates endorsed by Trump losing their primary contests, raising questions about how reliably his backing translates into votes in every race.