John McCain's running mate

John McCain is 71. He was tortured (right?) when he was younger, and he's led a pretty stressful life. If he's president, it'll be more stressful. Given that the vice presidency is a pretty weak position, it's usually sought after for political ambition -- vice presidents get a leg up when it comes to coverage and "buzz" that drives the nominating process for the next election. However, when you're John McCain's vice president, there's the added advantage of a higher probability of death, meaning you've got a higher chance of becoming the real president. Unless it's obvious from the beginning that Obama is going to trounce McCain.