It’s a debate as old as sex scandals: should a candidate’s sex life be a campaign issue? As Herman Cain faces a new allegation that he carried on a 13-year extramarital affair, the Daily Beast’s Michelle Cottle explains why it matters. Alpha males often experience a surge of testosterone that comes with success, which leads to a stronger sex drive. Powerful men can rein in these urges with the part of the brain that handles decision making and planning—functions he apparently hasn’t honed. “So the Herminator, who clearly counts himself as a master-of-the-universe type, couldn’t keep his hormones to himself.” Science proves it: Cain should stay away from the Oval Office.