Ironically, the House isn't thought to be in danger of flipping but the once thought to be safe GOP Senate might. However, a lot people think the GOP might get a net pickup of seats there!
Is this going to put the State House and Senate in play?
The Senate is already in play. I don't know enough about the nuances of the House to say for certain on that.
There are 19 seats separating the Democrats and Republican in the Pennsylvania State House, so it's in play, and the Republicans are going to lose quite a few seats - but I don't think it'll be enough to have the Democrats win the majority.
It all depends, though, and the Democrats just need 4 seats to pick up the Senate - which they'll meet and surpass.
There's no reason to be confident of that. The individual dynamics still favor the GOP in the "in play" seats and we are likely to pick up two western seats.