It's been a trope among Republicans that Democrats primarily win through fraudulent means for years. Trump was accusing Hillary Clinton, the DNC and "liberal media" of trying to steal it from him back in in 2016. Republicans claimed ACORN stole the election for Obama (along with the Birther thing.) Bob Dole accused the "liberal media" of stealing the election for Bill Clinton.

Also, this is the state with a pro-insurrection senator that sued another state for voting for Biden. The last four years have definitely been a hard shift right for what was already a solidly right-wing state.