Western NY would be hard core GOP- I live here, I see it
Depends upon where you’d draw the lines. Unless you were to include Long Island’s Nassau and Suffolk, the largest county would be Erie, and they are far from reliably Republican. The other most populous counties voted Demonrat for President (Monroe, Onondaga, Albany, et al). As I said, under ideal circumstances, you might squeeze out one (like PA), but the NE is too unreliable for the GOP anymore. I still believe you’d end up with 4 Demonrats.