Jansing & Co. 03/13/12

Santorum wins the South, should Gingrich drop out?

Rick Santorum’s campaign wants Newt Gingrich to drop out, but Gingrich vows he’ll stay in the race.  Meantime, Mitt Romney needs to sharpen his message and finally deliver a knockout blow.  Karen Hunter, David Corn and Chip Saltzman discuss. ... more Duration: {{video.duration.momentjs}}