Sanders braces for attack

Senator Bernie Sanders has the frontrunner target on his back - and his repeated comments underscoring positive programs in the Castro regime are giving his opponents ample fodder for criticism. How will Sanders handle increased scrutiny in tonight's debate? And will former mayor Mike Bloomberg rebound from a damaging performance last week? CNN political director David Chalian and CNN political reporter Dan Merica discuss a high-stakes week in South Carolina.To learn more about how CNN protects listener privacy, visit cnn.com/privacy Learn more about your ad choices. Visit podcastchoices.com/adchoices