Sanders wins narrow New Hampshire victory, followed by Buttigieg and Klobuchar

In a very close New Hampshire primary, Sen. Bernie Sanders has been declared the winner, followed by Pete Buttigieg and Sen. Amy Klobuchar. In Manchester, Judy Woodruff talks to Lucas Meyer of the New Hampshire Young Democrats and Dan Bush. In Washington, Amna Nawaz gets analysis from Lisa Desjardins, stationed at Sanders' New Hampshire campaign headquarters, and Democratic pollster Peter Hart.