One issue for IL Rs with winning statewide is that when Rauner or Kirk won is that they were able to hold white liberal areas from the loop Northwards down to pretty impressive margins.
At this point, it seems highly unlikely an R would be able to hold a Dem to under 20% in any of these precincts let alone outright win them. A reminder that even in 2016 Kirk was able to come close in magnificent mile precincts but ultimately still lost by a large margin due to Duckworth's dominance downstate.
I really doubt beyond an extreme turnout differentiation benefitting the GOP massively nationally or a god awful Dem canidate the GOP has the votes to win statewide in IL at this point.
Except Pritzker s exactly the kind of person the suburbs wont just vote for because hes a D.
Illinois will most likely reelect Pritzker, but lets not forget the heavy state problems that are affecting Illinois. Deficits, taxes, etc. Hes definitely vulnerable to the right candidate.