"Old Republicans"? Well, you've got Scalia and Thomas. Both of them have a good ten years left. You've got Souter (appointed by 41). He hasn't done us any favors recently. That leaves you with Stevens (appointed by Ford). He's got it in his will that he should be stuffed and propped into his Seat should he die before another Dem is elected Prez.
So now you're left with a guy completely unacceptable to strict constructionists on the court.
Stevens is 85, O'Connor is 75, Scalia is 69, Kennedy is 69, Souter is 66, and Thomas is 57.
Stevens is the only possibility.
Anyone got a line on his health? I can't find it online.