‘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 TrumpAverage tax refunds down double-digits, IRS data shows White House warns Maduro as Venezuela orders partial closure of border with Colombia Trump administration directs 1,000 more troops to Mexican border 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 BidenDem strategist says Clinton ‘absolutely’ has a role to play in 2020 It's Bernie Sanders vs. Elizabeth Warren in New Hampshire Harry Reid says he won’t make 2020 endorsement until after Nevada caucus MORE, Massachusetts Sen. Elizabeth WarrenElizabeth Ann WarrenSanders endorses Oakland teachers strike On The Money: Dems set Tuesday vote on Trump's emergency declaration | Most Republicans expected to back Trump | Senate plots to avoid fall shutdown drama | Powell heading before Congress News media has sought to 'delegitimize' Tulsi Gabbard, says liberal journalist MORE (D), Vermont Sen. Bernie SandersBernard (Bernie) SandersSanders endorses Oakland teachers strike Dem strategist says Clinton ‘absolutely’ has a role to play in 2020 News media has sought to 'delegitimize' Tulsi Gabbard, says liberal journalist MORE (I), New Jersey Sen. Cory BookerCory Anthony BookerSanders endorses Oakland teachers strike The Hill's 12:30 Report: Anticipation builds for Mueller report Why Georgia is the place for black migration and politics MORE (D), California Sen. Kamala HarrisKamala Devi HarrisOvernight Energy: Natural gas export project gets green light | Ocasio-Cortez says climate fight needs to address farming | Top EPA enforcement official to testify Sanders endorses Oakland teachers strike News media has sought to 'delegitimize' Tulsi Gabbard, says liberal journalist MORE (D), former New York City Mayor Michael Bloomberg and former Secretary of State Hillary ClintonHillary Diane Rodham ClintonDem strategist says Clinton ‘absolutely’ has a role to play in 2020 Left-leaning journalist: Sanders would be 'formidable candidate' against Trump Clinton hits EPA for approval of pesticide dump: ‘We need bees!’ 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