Here's my prediction for tonight (I'm a little more confident about this one than the Senate):
Mastriano: 40%
Barletta: 25%
McSwain: 18%
White: 11%
Other: 4%
Mastriano is going to dominate across western and especially central PA, keeping Lou confined to the cluster of counties around Luzerne/old PA-11 and possibly down towards Lehigh Valley/Philly suburbs. McSwain and White could win their respective home counties of Chester and Delaware but that's about it for them.
I called this one pretty well if I do say so myself (but then again this was expected)