As I’ve said before, McCain would probably have to pick someone like Huckabee or Allen both southern, conservative populists who would be young enough and experienced enough to be plausible successors.
I don’t know where one of you got the idea McCain wasn’t pro-life, he’s got a pretty robust stance on abortion and is firmly pro-life, he certainly errs to the side of moderation but he’s firmly within the republican mainstream on the issue along with other social issues… more interestingly he’s way to the right of his predecessor in his senate seat Barry Goldwater on abortion
I’ll never understand some republicans reluctance to back McCain, he win against any potential democrat, added to which he really is solidly within the party’s mainstream… as an example McCain is closer in his views to his party’s activist base than either Bayh or Warner are to the Democrats'.