Sanders, Warren try to turn Bloomberg's billions against him

Michael Bloomberg kicked off his presidential campaign this week with a television ad blitz that gobbled up a stunning amount of airtime in major media markets around the country and in a number of smaller swing states.

9 things to look for ahead of tonight's Democratic debate

The Democratic presidential race shifts Wednesday night to the Deep South, as the 10 leading contenders square off on stage with less than 11 weeks left before the Iowa caucuses.