the 2022 PA Senate Primary Composition by County: In a display of reversion towards PA's Ancestral Leans the GOP won the combined primary vote by an R+2.4% thanks to it being a Dem Midterm and having a more contested Primary than the democrats had.
Now, Don't take too much away from this map, I mapped it just because it piqued my interest as Primary County vote shares do not always correlate with General Vote Shares, (See: Single digits South West PA/D+24.0% Lackawanna, or R+0.5% Chester/D+7.5% Delaware)
I will add, that I found Combined Ds winning Northampton County by 2.13% a surprise
Lastly, this result is partially due to closed primaries, where due to partisanship being a lagging indicator Countie's ancestral leans showed up in this composition.