Trump should be doing a little better in NYC..where are the Giuliani voters? How is he at 17% in NYC? He lives there? Yes, I understand that he is controversial, but he lives there. He should be doing well in places like Glendale, Queens, etc.
Manhattan universally hates him, as does Brooklyn outside of Brighton Beach and Bensonhurst. There are a few neighborhoods in Queens like Howard Beach that might like Trump. In the Bronx, he's universally hated except for possibly Woodlawn and Throgs Neck, and even those places normally lean Democratic. Staten is probably where most of Trump's city votes are coming from