A new poll shows that 2016 presidential candidate Hillary Clinton has gained a 21-point lead over her opponent Bernie Sanders when it comes to net favorability.

According to a Gallup poll released Friday, 76 percent of Democrats and Democratic-leaning Independents surveyed in November said they have a favorable opinion of Clinton, which is an 8-point jump compared to her rating in October. Meanwhile, only 18 percent of those surveyed said that they did not have a favorable opinion of the former secretary of state. That gives her a net favorability rating of 58 points.

In comparison, 51 percent of the respondents had a favorable impression of Sanders, while 14 percent did not, giving him a net favorability ranking of 37.

Just two months ago, Clinton and Sanders had 51 percent and 38 percent favorability ratings, respectively.

However, Clinton's favorability numbers have continued to rise among all gender and generational groups throughout the last month, whereas Sanders suffered declines among every group except for women and Millennials aged 18 to 29.

Friday's polling data also found that Clinton has more name recognition than Sanders among Democratic-leaning voters. She has a 94 percent familiarity rating with that demographic, compared with 65 percent for the Vermont senator.

A recent survey published on RealClearPolitics shows the former first lady is ahead of the self-described "Democratic Socialist" by about 28 points nationwide.

Although Clinton continues to maintain a strong lead in the Democratic presidential primary, a recent poll suggests that Sanders would beat all of the Republican contenders in hypothetical head-to-head matchups in Wisconsin.

Polling data taken in The Badger State and analyzed by Marquette University Law School shows that the former New York senator would lose by a percentage point to GOP candidates Marco Rubio and Ben Carson. On the other hand, the data suggests that Sanders would beat Rubio by 4 percentage points and Carson by 6 points.