Primary challengers like the one facing Vos next Tuesday have been successfully targeting incumbent state lawmakers across the country, and Republicans are taking the brunt of it.

With more than half the state legislative primaries concluded, Republican incumbents this year have been losing at nearly twice the average rate of the past decade, according to data compiled for The Associated Press by the election tracking organization Ballotpedia. The primary loss rate for Democratic state lawmakers is similar to previous elections.

The Republican losses continued to mount Tuesday, as Trump-endorsed candidates ousted incumbent state senators in Arizona and Michigan and a conservative challenger beat the assistant majority leader of the Missouri Senate. Though not technically an incumbent, Arizona House Speaker Rusty Bowers also lost a bid for state Senate after being criticized for refusing to help Trump’s efforts to overturn the 2020 election.

In many cases, Republican lawmakers are being defeated by challengers portraying themselves as more conservative on election integrity, transgender policies, school instruction and other hot-button issues.

“We have a far-right faction that is very dissatisfied with what’s happening on the left. So if you are not rabidly a fanatic that just punches every button, then you’re going to have an issue,” said Arkansas state Rep. Craig Christiansen, who lost in a Republican primary earlier this year.