Democrats define themselves, damage opponents in last debate

Aired: 1/18/2016 | 0:11:52 | Clip
With the Iowa caucuses coming up, Democratic presidential nominees Hillary Clinton, Sen. Bernie Sanders and Martin O’Malley faced off Sunday night for the final time before voting starts, bringing both substance and swipes. Political director Lisa Desjardins reports on the Democratic debate, and Judy Woodruff gets analysis from NPR’s Tamara Keith and Susan Page of USA Today.