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‘None of the above’ tops list of potential 2020 Dems, poll shows

With the 2018 midterms in the rearview mirror, several Democrats are gearing up for the 2020 presidential contest. But so far, no Democrat has attracted broad support from the party's base, according to a new Hill.TV American Barometer poll.

The survey, conducted among 680 registered voters who identified themselves as Democrats or independents, found that "none of the above" was the most popular choice among potential 2020 challengers to President TrumpDonald TrumpKinzinger, Gaetz get in back-and-forth on Twitter over Cheney vote READ: Liz Cheney's speech on the House floor Cheney in defiant floor speech: Trump on 'crusade to undermine our democracy' MORE.

Thirty percent of the sample said they would prefer that "none of the above" become the Democratic nominee when asked to choose among former Vice President Joe BidenJoe BidenKinzinger, Gaetz get in back-and-forth on Twitter over Cheney vote Cheney in defiant floor speech: Trump on 'crusade to undermine our democracy' US officials testify on domestic terrorism in wake of Capitol attack MORE, Massachusetts Sen. Elizabeth WarrenElizabeth WarrenThe Hill's Morning Report - Presented by Facebook - Biden, Congress drawn into pipeline cyberattack, violence in Israel The Memo: Outrage rises among liberals over Israel The Hill's Morning Report - Presented by Facebook - Infrastructure, Cheney ouster on deck as Congress returns MORE (D), Vermont Sen. Bernie SandersBernie SandersWyden: Funding infrastructure with gas tax hike a 'big mistake' The Hill's Morning Report - Presented by Facebook - Biden, Congress drawn into pipeline cyberattack, violence in Israel The Memo: Outrage rises among liberals over Israel MORE (I), New Jersey Sen. Cory BookerCory BookerIn honor of Mother's Day, lawmakers should pass the Momnibus Act Bush testifies before Congress about racist treatment Black birthing people face during childbirth, pregnancy Tim Scott sparks buzz in crowded field of White House hopefuls MORE (D), California Sen. Kamala HarrisKamala HarrisRepublican Sean Parnell jumps into Pennsylvania Senate race Biden sees Trump rematch as real possibility Ode to Mother's Day MORE (D), former New York City Mayor Michael Bloomberg and former Secretary of State Hillary ClintonHillary Diane Rodham ClintonSchumer: 'The big lie is spreading like a cancer' among GOP America departs Afghanistan as China arrives Young, diverse voters fueled Biden victory over Trump MORE.

Twenty-five percent of respondents said Biden would be their preferred nominee. Sanders, who ran in the Democratic presidential primary in 2016, came in second with 18 percent.

Twelve percent of the independents and Democrats surveyed picked Clinton, Sanders's one-time presidential rival, who signaled a willingness to run again, saying in an October interviewer that she would still "like to be president."

Other candidates attracted even less support. Harris, Bloomberg and Warren were each the top choice for just 4 percent of respondents.

Warren had been regarded by some progressive advocates as a strong candidate, but she may have lost some support after provoking controversy by releasing a DNA test to address persistent questions about her claims of Native American heritage. A Morning Consult/Politico poll from October found that just 34 percent of Democratic respondents believed Warren's actions were "appropriate."

The American Barometer survey was conducted on Nov. 5-6 among 680 registered voters by the HarrisX polling company. The sampling margin of error is 3.76 percentage points.

— Matthew Sheffield