How did none of this come out during Parnell's Congressional run?
Anyway, if Parnell is the nominee, this race is likely D. People in this thread seem to think that PA is like Alabama, which I assure you is not the case. PA Rs need to stem the bleeding with voters in the Philly suburbs, and Parnell would be absolutely toxic to suburbanites.
Candidate quality matters little in this day and age. Republicans will vote for republicans, and democrats will vote for democrats. And democrats won’t turn out at the same rate as republicans in a Biden midterm, and that includes in those Philly suburbs that you mentioned.
Lean R, Parnell +2 or 3.