Ari Melber: Study Finds Bias in 2008 Campaign -- Among Men Only

Maybe there weren't that many "P.U.M.A.s" after all. A new Harvard study reports that male voters displayed "in-group" bias for people who shared their candidate preference in the 2008 Democratic presidential primary, while women voters did not. The tendency to favor fellow Obama or Clinton supporters was measured through a generosity exercise, the "dictator game,"...