He's also signed paperwork to run as an independent in the general election in case he lost the primary.
"I said he won the primary election," Cuomo told the outlet. "I said I wanted to look at the numbers and the ranked-choice voting to decide about what to do in the future, because I'm also on an independent line."
Though he probably expected it to be far closer than this. Zohran massively outperformed polls. No polls had him winning the first round let alone by this much (even the few polls that had Zohran winning)
He's hinted at a third party run in the general. I dunno, maybe he thinks denying reality and holding on the whole way to an inevitable loss would make him look weak for that.
I thought mayor was a partisan position in every US city. If fact, in the US every elected position is effectively a partisan position, even the rare ones that officially aren't.