In today's Best of the Web, they run the actuarial numbers and conclude:
Let's take the average of the two figures and say that McCain has a 14.65% likelihood of dying before Inauguration Day 2013, while Obama's likelihood is 1.465%.
For the sake of argument, assume further that Joe Biden and John McCain are equally qualified to be president, and Sarah Palin is as unqualified as Barack Obama.
That means that if McCain is elected, there is better than an 85% chance that America will have a qualified president at the end of the term. If Obama is elected, the likelihood of having an unqualified president at term's end is higher than 98.5%.
Just another reason to vote McCain Palin.