Are you kidding? The odds of a veep succeeding any President are very high. Here we're talking about a veep for a 72 year old President. If McCain nominates a pro-abort like Lieberman, he'll be throwing the entire pro-life movement under the wheels of the Straight Talk Express.
Yep, he's already older than his dad was when he died. A pro-death veep of McCain's would have a good chance of stepping up.