Bill Clinton's cheating led to Hillary's decision to use him 'sparingly' in US elections

Bill Clinton has been used sparingly on his wife's campaign trail this year - a decision made by Hillary's managers who believed he might become a distraction.

Turning 70 this past August, Bill has had better and worse days. Some days his hands quiver, some days he looks frail and elderly. Other times he's robust and forceful.

But it's his rumored post-presidency extramarital affairs that led Hillary's campaign to keep him off the schedule.

Author Joe Conason reveals the details of the unending rumors of Bill's multiple lovers over the years in his new book, Bill Clinton: Man of the World, published by Simon and Schuster.

The list includes Belinda Stronach, a divorced Canadian heiress in her forties who held a seat in Parliament; a wealthy, young Canadian woman residing in New York; his divorced blond neighbor, Julie Tauber McMahon who was dubbed 'the energizer' because of her frequent trysts with Clinton; and actress Gina Gershon, who has denied having an affair with the former president.

More