‘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 TrumpTrump pushes back on recent polling data, says internal numbers are 'strongest we've had so far' Illinois state lawmaker apologizes for photos depicting mock assassination of Trump Scaramucci assembling team of former Cabinet members to speak out against Trump 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 BidenEight Democratic presidential hopefuls to appear in CNN climate town hall Hill Reporter Rafael Bernal: Biden tries to salvage Latino Support Biden, Buttigieg bypassing Democratic delegate meeting: report MORE, Massachusetts Sen. Elizabeth WarrenElizabeth Ann WarrenTop Sanders adviser: Warren isn't competing for 'same pool of voters' Eight Democratic presidential hopefuls to appear in CNN climate town hall In shift, top CEOs say shareholder value not top goal MORE (D), Vermont Sen. Bernie SandersBernie SandersTop Sanders adviser: Warren isn't competing for 'same pool of voters' Eight Democratic presidential hopefuls to appear in CNN climate town hall Top aide Jeff Weaver lays out Sanders's path to victory MORE (I), New Jersey Sen. Cory BookerCory Anthony BookerEight Democratic presidential hopefuls to appear in CNN climate town hall Biden, Buttigieg bypassing Democratic delegate meeting: report F-bombs away: Why lawmakers are cursing now more than ever MORE (D), California Sen. Kamala HarrisKamala Devi HarrisEight Democratic presidential hopefuls to appear in CNN climate town hall Biden, Buttigieg bypassing Democratic delegate meeting: report The Hill's Morning Report - Trump on defense over economic jitters MORE (D), former New York City Mayor Michael Bloomberg and former Secretary of State Hillary ClintonHillary Diane Rodham ClintonTop Sanders adviser: Warren isn't competing for 'same pool of voters' Anti-Trump vets join Steyer group in pressing Democrats to impeach Trump Republicans plot comeback in New Jersey 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