1. It's a dysfunctional "blue" state.
2. We have a very unpopular Republican governor (Chris Christie).
3. We're filled with migrants from all over the Third World (Latin America, Asia, New York City, etc.).
4. Our wealthiest taxpayers are leaving in droves.
No, Trump would do well to concentrate his efforts elsewhere and target his ads elsewhere. He needs to win Florida, Ohio, North Carolina, Nevada and Colorado. Anything beyond that is a bonus.
“Migrant” is insufficient description to ascertain whether Trump opposes them. VViz. “Hispanics for Trump.”
Trump is opposed to the gate jumpers and line cutters... and a whole lot of honest migrants are opposed to them too.
Do see your point. NJ is unlikely.
Frankly, Colorado and Nevada are tougher for Trump than the rustbelt states. PA, MI, and to a lesser degree Wisconsin and Minnesota are our best bets IMO. Virginia would be a nice surprise, but I fear that state is a longshot.