...if he were acting only according to principle. If Rudy Giuliani took that stance in the real world, however, the howls of outrage would be heard to the ends of the earth, he would be burned in effigy in Ithaca (City of Evil), and Susan Estrich would issue a fatwa against him.
None of which would particularly bother me, but Roe v. Wade is so symbolic to feminism and liberalism, any support for overturning it would be construed as being anti-choice, regardless of the principles behind such a stance.
If I thought a vote for a pro-choice candidate might actually result in the overturning of Roe v. Wade, I'd have to think about it...I'd have to think long and hard.
I think an articulate politician could make the case in a convincing enough fashion that it would satisfy the GOP and most independents.