The Politics Of Aging.

From Politico:

"The odds of a 72-year-old man living four more years, or one full White House term, are better. But for a man who has lived 72 years and 67 days (McCain's age on Election Day this year), there is between a 14.2 and 15.1 percent chance of dying before Inauguration Day 2013... Going by the Social Security Administration's tables, that's nearly ten times the likelihood that a man aged 47 years and 92 days (Barack Obama's age on Election Day this year) will die before Jan. 20, 2013."