Well, it was close enough that it should worry the Dems and put NJ in play for Republics in the near future. NJ has not always voted consistently for democrats.

The question is not why there was a swing, any number of reasons can be attributed ex post facto.

The point is no poll caught any of the swings at all. To win with this margin Trump the polls can hardly be tied and be called accurate.

The result is not a close at all, and it is not about swing states and electoral college swings. Trump is winning the popular vote by a large margin something he has never be able to do so before.

That's easy to explain--cultural and media institutions have disparaged Republican voters for so long that Trump voters inherently distrust pollsters. They might or might not turn out in a given election, but they have nothing to gain by telling anybody.

[delayed]