Too many of the public sector employees aren’t even NYC voters; who would make so much money and still live in that Third World hole? They vote in Westchester & Orange counties, or out on the island...
The mutants living in the city itself? Yes, they’d probably elect him again in a heartbeat; those are the freaks holding the signs.
The average cost per square foot in Manhattan is the most expensive in the United States. Average monthly rent in the five boroughs is about $3K per month.