Supermarket mogul and former Republican candidate for New York mayor John Catsimatidis says Mayor Adams should “run on both lines” — meaning as a Republican and a Democrat — in his bid for re-election. The one catch, Mr. Catsimatidis tells the New York Sun, is that Mr. Adams would need an endorsement from President Trump.

“The only way Republicans will back him is if Donald Trump comes out and endorses him,” Mr. Catsimatidis says. “What I’m saying is run as a Republican. I think he’s going to run as a Democrat, too.”

The idea that Mr. Adams would switch parties and run as a Republican — or this two-party scheme — is gaining traction after a top Justice Department official, Emil Bove, sent a letter on Monday directing the United States Attorney’s Office for the Southern District of New York to dismiss all charges against Mr. Adams “without prejudice.”

Mr. Catsimatidis was dining with the mayor on Monday night at Gallagher’s Steakhouse when the news broke. “I said we should make an example of New York City. Make it a safe city again, bring back quality of life, and deport criminals,” Mr. Catsimatidis says. “Then use that example to clean up other big cities in America.”