‘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 John TrumpWarren: 'White supremacists pose a threat to the United States like any other terrorist group' National Enquirer paid 0,000 for Bezos texts: report Santorum: Trump should 'send emails to a therapist' instead of tweeting 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 BidenJoseph (Joe) Robinette BidenBiden weighing an early announcement of running mate: report Poll: Biden leads among millennial voters O'Rourke faces sharp backlash from left MORE, Massachusetts Sen. Elizabeth WarrenElizabeth Ann WarrenWarren calls for abolishing Electoral College Warren: 'White supremacists pose a threat to the United States like any other terrorist group' Poll: Biden leads among millennial voters MORE (D), Vermont Sen. Bernie SandersBernard (Bernie) SandersWarren calls for abolishing Electoral College Biden weighing an early announcement of running mate: report Poll: Biden leads among millennial voters MORE (I), New Jersey Sen. Cory BookerCory Anthony BookerPoll: Biden leads among millennial voters Booker: Racists think Trump's racist Booker vows to reverse 'ridiculous' transgender military ban if elected president MORE (D), California Sen. Kamala HarrisKamala Devi HarrisBiden weighing an early announcement of running mate: report Poll: Biden leads among millennial voters O'Rourke faces sharp backlash from left MORE (D), former New York City Mayor Michael Bloomberg and former Secretary of State Hillary ClintonHillary Diane Rodham ClintonOvernight Health Care: CDC pushes for expanding HIV testing, treatment | Dem group launches ads attacking Trump on Medicare, Medicaid cuts | Hospitals, insurers spar over surprise bills | O'Rourke under pressure from left on Medicare for all O'Rourke faces sharp backlash from left Dem strategist says South Carolina will be first 'real test' for O'Rourke 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