Salter is hardly alone among Republican operatives and policy hands expressing disgust with Trump. But he may the highest profile one yet to say he’d support the likely Democratic nominee instead.

“The GOP is going to nominate for President a guy who reads the National Enquirer and thinks it’s on the level,” Salter tweeted Tuesday, adding Clinton’s slogan: “I’m with her.”

McCain was one of Trump’s first targets last year after entering the presidential race, when the the reality TV star criticized the senator for being a prisoner of war in Vietnam. McCain has been critical of Trump as well as Sen. Ted Cruz, but said he would support the Republican nominee either way. McCain’s Democratic Senate opponent has cut an ad hitting Mccain for that.

Salter, who voted for Sen. Marco Rubio in the Virginia primary, has said on Facebook that he would vote for Clinton over Trump. On Super Tuesday in late February, he called Trump a “Fascist quoting, friend of the Klan.”

But Salter’s comments takes on new significance now that it is no longer a hypothetical question and Trump is on a glide path to the nomination.