‘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 says he doesn't want NYT in the White House Veterans group backs lawsuits to halt Trump's use of military funding for border wall Schiff punches back after GOP censure resolution fails 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 BidenTrump says he doesn't want NYT in the White House Warren to protest with striking Chicago teachers Schiff punches back after GOP censure resolution fails MORE, Massachusetts Sen. Elizabeth WarrenElizabeth Ann WarrenWarren to protest with striking Chicago teachers Overnight Health Care — Presented by Partnership for America's Health Care Future — Four companies reach 0M settlement in opioid lawsuit | Deal opens door to larger settlements | House panel to consider vaping tax | Drug pricing markup tomorrow On The Money: Trump dismisses 'phony Emoluments Clause' after Doral criticism | Senate Dems signal support for domestic spending package | House panel to consider vaping tax MORE (D), Vermont Sen. Bernie SandersBernie SandersWarren to protest with striking Chicago teachers Sanders: 'Outrageous' to suggest Gabbard 'is a foreign asset' Democratic strategist: Sanders seeking distance from Warren could 'backfire' MORE (I), New Jersey Sen. Cory BookerCory Anthony BookerPoll: Biden holds 10-point lead nationally over Warren Trump declines to participate in Weather Channel 2020 climate change special Bennet: Warren 'not being honest about' her 'Medicare for All' plan MORE (D), California Sen. Kamala HarrisKamala Devi HarrisClinton attacks on Gabbard become flashpoint in presidential race Poll: Biden holds 10-point lead nationally over Warren Trump declines to participate in Weather Channel 2020 climate change special MORE (D), former New York City Mayor Michael Bloomberg and former Secretary of State Hillary ClintonHillary Diane Rodham ClintonSanders: 'Outrageous' to suggest Gabbard 'is a foreign asset' Clinton attacks on Gabbard become flashpoint in presidential race Saagar Enjeti: Clinton remarks on Gabbard 'shows just how deep the rot in our system goes' 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