With Rice, it also depends on the other issues since I don't vote blindly.
However, she can't expect to win if she underperforms 10% in base counties. Can a democrat win Michigan with 59% in Wayne County? Can a Republican win Ohio with losing Hamilton County or getting 56% in Butler County? Win Florida by going even up in Duval County?
That's what I see by a pro-choicer. I know way too many republicans who say "Candidate A is pro-choice? We have nothing to discuss".
It is a relative thing. And what is lost one place, can be made up other places. Think of Guiliani, and if he ran, and got the nomination, how different the precinct map would be from Bush's. It is a debit and credit exercise, and just because the precincts in the Bush runs have been so frozen, is really not much of a predictor.