As both the Primaries and Brexit proved the methodologies used by polling companies has been proven to be absolutely shot.
There is a growing swell of people who have never voted/not voted in years who are growing increasingly fed up of the Establishment. These are voters the polling companies are clueless at picking up on and exactly the people that Trump (and Bernie to an extent) have been attracting.
I’ve got a friend very heavily involved in a professional capacity in New York politics who is convinced Trump is going to win that state in a landslide.
If Trump wins NY, let alone in a landslide, I’ll eat my MAGA hat.