The GOP are going to be bleeding seats in the Philly Suburbs thanks to Trump. Trump has made everything Republican in these types of well-educated districts radioactive.
Yeah, I expect this to be an important election not just in the short term but also in the long term for the Greater Philadelphia area. I think the GOP is going to lose a lot of suburban seats that they will not be winning back for quite a while.
The suburban Philly counties delegations are currently:
Bucks:
6-4 Republican in state house
4-0 Republican in state senate
Chester:
8-1 Republican in the state house
3-1 Republican in the state senate
Delaware:
6-5 Democrats in state house
2-2 in state senate
Montgomery:
10-8 Republican in state house
3-3 in state senate
I suspect that Republicans will lose their majorities in the house in all four counties, or at least come close. Add to that likely pickups in the U.S. House in both PA and NJ, and this is going to be a huge election for Democrats in the Greater Philadelphia Area.