BEFORE LAUNCHING IN EARLY July what he promised would be an all-out effort, one he would see “through the end, to the final day,” to keep Zohran Mamdani from winning the mayor’s office, Republican political megadonor John Catsimatidis had a phone call with the Democratic nominee himself.
“I said to him, ‘Look, you’re a very nice guy and, you know, a very smart guy,’ ” the 76-year-old billionaire owner of the Gristedes supermarket chain told me. “And he says to me, ‘Oh, when you get to know me, you might like me.’ ” Catsimatidis had called me from D.C., where he was attending the Senate confirmation hearing for Kimberly Guilfoyle’s nomination as ambassador to his beloved Greece. “I try to be a very civilized person. I’ve hired company executives for…