What the 2012 election can teach us about 2014 and beyond

Aired: 12/30/2013 | 0:10:38 | Clip
As the first year of President Obama's second term draws to a close, Gwen Ifill talks to Mark Halperin of Time magazine and John Heilemann of New York magazine about their new book, "Double Down: Game Change 2012," for insight into the people who shaped the 2012 election and what that election says about races to come.