It’s all that is south of the Rockland County - Orange County line and Westchester County - Putnam County line that spoils the state. Culturally there are two different states divided by that line. I have seen though the NYC Metro types bringing their poison north across the divide.
I am told by family in South Carolina of a similar dividing line in South Carolina. Upstate is conservative. Colunbia - Charleston corridor produces the squish Graham.