In my view, NJ is a possibility but New York is not. No matter how bad things are in the city, with the exception of the Orthodox Jewish areas, Staten Island, and south Brooklyn, Biden will clear it with a huge vote margin that cannot be offset by the votes from these city precincts, upstate or the Long Island counties.
Well ... New Jersey would fulfill the same function on Election Night. If Trump is doing unexpectedly well there, it might be an indicator of how things will go later.