More than three-in-four Democrats and leaners surveyed 76 percent said they had a favorable opinion of Clinton, while 18 percent said they did not, for a positive rating of +58 points. In the last survey, Clinton had a net favorability rating of +51 points, with 73 percent to 22 percent seeing her in a positive light.
In the case of Sanders, 51 percent gave him favorable marks, while 14 percent said they had an unfavorable view of him. Taken together, a slight increase in Clinton's favorability rating and a slight decrease in Sanders' resulted in the overall favorability disparity between the two candidates, who along with Maryland Gov. Martin O'Malley, will next debate on Dec. 19 in Manchester, New Hampshire.