Vermont Sen. Bernie Sanders isn't leading the presidential field, but he is by far America's most popular senator, according to a new Morning Consult poll that shows Sanders with an 83 percent job approval rating among his constituents.

The second most popular senator is Republican Susan Collins of Maine, with 78 percent approval.

Sanders' disapproval rating was also the lowest of any senator, at only 13 percent among the 230 voters polled in the Green Mountain State. Sanders' results have a 6.5 percent margin of error.

The next lowest disapproval rating was for Republican Sen. John Hoeven of North Dakota and Republican John Barrasso of Wyoming, each with 15 percent.

The only senator with a disapproval rating higher than 50 percent was Majority Leader Mitch McConnell. Two Democrats tied for the lowest approval ratings - Gary Peters of Michigan and Bob Menendez of New Jersey, both with 37 percent.

The Republican senators also currently running for president didn't fare nearly as well as Sanders. Conservative favorite Sen. Ted Cruz of Texas was the most popular, with just a 52 percent approval rating among his constituents and a 32 percent disapproval rating. Overall, Cruz tied with seven other senators for America's 20th most popular senator.

South Carolina Sen. Lindsey Graham has a 51 percent job approval rating and a 35 percent disapproval, while Florida Sen. Marco Rubio came in next with 50 percent approval and 33 percent disapproval, tying with six others for America's 22nd most popular senator, notes Newsweek.

Rand Paul of Kentucky tied for America's 24nd most popular senator, with 48 percent approval and 27 percent disapproval.

In all, Senate Democrats have an average approval rating of 54 percent, compared to Republicans' average of 51 percent. Sixty-nine of 100 senators saw approval ratings better than 50 percent.

The survey was conducted among more than 75,000 registered voters between late May and mid-November and has a median sample size of 1,172 respondents in each state. The margin of error varies for each candidate depending on the number of constituents surveyed.

Meanwhile, the Sanders campaign suggested Wednesday that Sanders seems to be more popular among women than front-runner Hillary Clinton, at least in terms of the number of female donors. According to his campaign, some 301,154 women gave money to Sanders as of the last reporting period, reports The Washington PostThat's compared to the approximately 240,000 women who gave money to Clinton's campaign.