Republican officials are in a tough spot. Accusations of sexual misconduct or domestic violence are not necessarily disqualifying in the party of Trump. In some cases, they can be dismissed as lies — Mr. Trump’s preferred approach — a nefarious attack by haters. Bad behavior that is indisputable can always be pooh-poohed as unfortunate but of secondary importance within the larger battle against radical leftists.

For devout Trumpists, accusations of toxic masculinity can even be a comfort of sorts, a kind of corrective to a #MeToo movement that many in the MAGAverse consider excessive and anti-man. Remember when two White House aides resigned over accusations of domestic violence in early 2018? Mr. Trump popped up on Twitter to whine, “Peoples lives are being shattered and destroyed by a mere allegation.” Later, during the Brett Kavanaugh hubbub, Mr. Trump bemoaned what a “scary” and “difficult” time it was to be a young man in America.

The rot goes beyond the disrespect and mistreatment of women. Under Mr. Trump, the Republican Party has undergone a fundamental shift, swapping a fixation on character and morality and so-called Family Values for a celebration of belligerence, violence, and, yes, toxic masculinity. Greg Gianforte won his 2017 House race after “body slamming” a reporter who asked an unwelcome question. Charged with assault and sentenced to anger management classes and community service, Mr. Gianforte was praised by Mr. Trump as “my kind of guy” for his violent display. Last year, Montanans elected him governor.