I have offered some explanation for this in the past. First, I am in Bergen County and my area in BC went big for Jack. I am surprised by the blue areas in Northwestern NJ because that is very rural with a lot of blue collar workers. The red areas tend to be the wealthier areas of NJ.
My town is very red. A few years ago the liberals attempted to take over and won some local races running candidates who favored wokeness in the schools. They changed the school mascot from Cowboys, which was not inclusive, to Broncos. It was a pretty big battle and the following election all the woke morons got the boot. All they did was awaken the conservatives and get them out to vote. Still in my town the turnout was only 53%, the lowest in a long time and lower than all the other surrounding towns in the county. I don't know why.
But the problem is NJ is losing conservatives who are moving to conservative states like Florida and replacing them with lower income people from out of state. This started a long time ago when they passed a law requiring every town to build a certain amount of low income housing. The claim was children born here couldn't afford to live here. But the children of our residents are not qualifying for the affordable housing. It's mostly low income people from out of state. This turns out to be a lot of Democrats.
Of course affordable housing is a scam. Developers, who fund Democrat campaigns, are allowed to build hundreds or thousands of unity of which a small percentage are affordable unity. The rest are very expensive luxury units which cost more than most homes. Rents often exceed $5000 per month.
NJ also has a very liberal Supreme Court that denies any attempts by towns to sue their way out of these housing mandates. But you know who started this nonsense? Christie Todd Whitman. a Republican governor. She appointed all the liberals to our courts and now we are paying for it. Mikey Sherrilll looks like another Christie Todd Whitman.
People hate Chris Christie, but as governor he put an end to a lot of the nonsense here. He vetoed a lot of the stupid spending and other dumb programs liberals were using to destroy the state.
But, the tide is too strong to stop forever. And I believe this is what America faces. Trump can slow it down for a few years but I think the time will come when the entire country is overrun but leftist idiots who have no idea how destructive their ideas are.