Tossup, nobody outside of PA-1 would care about Brian Fitzpatrick being some moderate R.
That's where you're wrong. County GOP parties across the Commonwealth have been censuring Toomey (or giving him a slap on the wrist, or sternly warning him, or stating that they disagree with him strongly) for his vote to convict Trump. The PAGOP has fully embraced Trumpism and I would not be surprised if they either tried to make Fitzpatrick seem more hard right than he actually is, or not invest in him as heavily and instead go for broke trying to win the Governor's race.
Yeah - you're right actually.