Democrats Debate, Round 2: Who Won, Who Lost and Who Needs to Quit

The one-two punch of the first Democratic primary debates have concluded, with the second stage of ten candidates debating on NBC News last night. They included former Vice President Joe Biden, Sen. Bernie Sanders of Vermont, Sen. Kamala Harris of California, South Bend Mayor Pete Buttigieg, Sen. Kirsten Gillibrand of New York, tech entrepreneur Andrew Yang, Sen. Michael Bennet of Colorado, former Gov. John Hickenlooper of Colorado, author Marianne Williamson, and Rep. Eric Swalwell of Californi