President Franklin D. Roosevelt won his first of four terms 12 years after being on a losing ticket in 1920 as James M. Cox's vice-presidential running mate. But history shows that running for vice president is a political gamble. (Associated Press)

President Franklin D. Roosevelt won his first of four terms 12 years after being on a losing ticket in 1920 as James M. Cox's vice-presidential running mate. But history shows that running for vice president is a political gamble. (Associated Press)