NBC hosted the first Democratic presidential debates, which was split into two nights because of the sheer number of candidates running. In the second night, race became the focus of the debate when Senator Harris challenged former Vice President Biden on his record. This episode: White House correspondent Tamara Keith, political correspondent Scott Detrow, political reporter Danielle Kurtzleben, and national political correspondent Mara Liasson. Email the show at email@example.com. Find and support your local public radio station at npr.org/stations.