MSNBC Live with Tamron Hall 12/30/15

Donald Trump to launch massive ad blitz

The latest polls show Donald Trump has a solid lead, with Ted Cruz second and Marco Rubio third, as he prepares to launch a massive ad blitz in three key swing states, including South Carolina. MSNBC’s Steve Kornacki and Kasie Hunt joins Craig Melvin on MSNBC. ... more Duration: {{video.duration.momentjs}}