The leftist areas are the shiathole areas like north Jersey, Trenton, Camden, Asbury Park, Atlantic City, Pleasantville. South Jersey is more like Alabama then New York, my commented that he sees more confederate flags on people’s trucks, houses, trailers then you do down in the southern states. The state is not pure by any means.
Ocean, Monmouth, Atlantic, Cape May counties are the areas you would visit anyways, those are also the more conservative areas and are actually really nice.
The old joke was that NJ placed the refineries, airports, seaports, garbage dumps, power plants, factories, across the Hudson to keep the New Yorkers from migrating here...