Key Takeaways from the Last Democratic Presidential Debate of 2019

A.M. Edition for December 20th: A smaller stage for the last Democratic presidential debate of 2019 - Gerald F. Seib and Emily Glazer break it down. Plus, Caitlin Ostroff on Tesla's share surge and a programming note about a special series next week reviewing the past decade. Kim Gittleson hosts. Learn more about your ad choices. Visit megaphone.fm/adchoices