I believe he has a lot of support in NY despite the fact that it's run by leftist idiots. He already has the support of the NYPD union, which is unheard of for a President. I know he recently went there, but I'd love it if he spent a week there, doing meet and greets.
I would say the same for CA I think he has big support there too. I'd love it if each week up until the election he visited every single state.
Not much chance but even if he could move it from 60-40 to 55-45 it would rattle some people and might even give him the popular vote.