‘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 TrumpSarah Huckabee Sanders becomes Fox News contributor The US-Iranian scuffle over a ship is a sideshow to events in the Gulf South Korea: US, North Korea to resume nuclear talks 'soon' 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 BidenSarah Huckabee Sanders becomes Fox News contributor Poll shows Biden, Warren tied with Trump in Arizona Giuliani says he discussed Biden with Ukrainian official MORE, Massachusetts Sen. Elizabeth WarrenElizabeth Ann WarrenKrystal Ball: Elites have chosen Warren as The One; Lauren Claffey: Is AOC wrong about the Electoral College? Poll shows Biden, Warren tied with Trump in Arizona McConnell rejects Democrats' 'radical movement' to abolish filibuster MORE (D), Vermont Sen. Bernie SandersBernie Sanders2020 candidates have the chance to embrace smarter education policies Bernie Sanders Adviser talks criminal justice reform proposal, 'Medicare for All' plan Poll shows Biden, Warren tied with Trump in Arizona MORE (I), New Jersey Sen. Cory BookerCory Anthony BookerOvernight Defense: Two US service members killed in Afghanistan | Trump calls on other nations to take up fight against ISIS | Pentagon scraps billion-dollar missile defense program ABC unveils moderators for third Democratic debate Sanders targets gig economy as part of new labor plan MORE (D), California Sen. Kamala HarrisKamala Devi HarrisPoll shows Biden, Warren tied with Trump in Arizona Rising Warren faces uphill climb with black voters Inslee drops out of 2020 presidential race MORE (D), former New York City Mayor Michael Bloomberg and former Secretary of State Hillary ClintonHillary Diane Rodham ClintonPoll shows Biden, Warren tied with Trump in Arizona The Hill's Morning Report - Trump touts new immigration policy, backtracks on tax cuts Hickenlooper announces Senate bid 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