as a practical issue, the pro-life movement has as its #1 goal - overturning Roe. that gets accomplished with constitutionalist judges.
empower the people to decide the issue at the State level, through their elected representatives. there is never going to be constitutional amendments banning all abortions and banning the States from deciding gay civil unions. even if a Brownback/Gary Bauer ticket were elected president, that wouldn't happen.
That's why the best thing that could happen for Rudy is for Justice Stevens to die or retire in the next year.
If Bush appoints a 5th conservative this summer, I think Rudy's chances go way up.
With 5 conservatives on the SC, Roe is history(or, if it is still upheld with Alito, Roberts and Bush's 3rd pick, then we may as well accept that it will never be reversed), abortion ceases to really matter on the Presidential level.
I think if Bush gets a 3rd SC nom, Rudy moves to the driver's seat.