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Bill Clinton: A candidate's best friend

Former President Clinton speaks during the closing plenary session of the Clinton Global Initiative last month in New York. (Photo by Greg Allen/Invision/AP)

Bill Clinton is the most popular on the campaign trail.

The former president scored the best among eight prominent figures when registered voters were asked if a campaign endorsement would help or hurt, according to a new Wall Street Journal/NBC News/Annenberg poll.

If endorsed by Bill Clinton, 38 percent of people asked would look at the candidate more favorably, compared to 24 percent who would take a less favorable view.

Hillary Clinton and first lady Michelle Obama were the only other two politicians who had a net positive of greather than one percentage point, the survey found.

Endorsements from President Obama, 2012 GOP presidential nominee Mitt Romney, Republican New Jersey Gov. Chris Christie and Republican Sens. Ted Cruz of Texas and Rand Paul of Kentucky all would cause registered voters to view a candidate more negatively.

Among Democrats, Bill Clinton led the way for a more favorable view of a candidate: 70 percent. Hillary Clinton (65 percent), President Obama (60 percent) and Michelle Obama (56 percent) followed.

For Republicans, Romney polled the best at 59 percent. Less than a third of Republicans said that Christie, Paul and Cruz would leave a positive view of whoever the endorse.

The survey of 1,181 registered voters was done Sept. 26 through Oct. 2, with a margin of error of plus or minus 3.42 percentage points.