Personally, I think we're in for a nasty surprise on this one--a surprise which may lead to the formation of a viable social conservative 3rd party...
The ridiculous thing is that most "honest" Constitutional scholars, both pro-life and pro-abortion, agree that Roe v. Wade is a horribly written ruling, especially to set precedent. In the absence of a Constitutional amendmentd, abortion should clearly be a matter for each state to decide legislatively.
My personal theory on what would work best would be for a pro-life (probably Catholic) politician to introduce an amendment that bans both abortion and capital punishment. This would be difficult for the pro-abortion crowd to get behind. I am personally in favor of capital punishment, but I think the time is soon approaching when it will be declared unconstitutional and I don't actually see where it is any more a deterrent than actual life in prison without parole.