IE 11 is not supported. For an optimal experience visit our site on another browser.

Cook Political Report predicts Democratic control of the Senate

04:03

Charlie Cook joins Lawrence O’Donnell to discuss his predictions that Democrats will win back the Senate, potentially gaining as many as seven seats, which Republican Senators are the most vulnerable to losing their seats, and how trends he’s seeing with voters “either just voting red or they’re voting blue” could impact the race.