‘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 TrumpBroward County official Brenda Snipes submits resignation after criticism Retired lieutenant general tears into Trump over attacks against Navy SEAL: 'Disgusting' Senate barrels toward showdown over Trump's court picks 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 BidenDems wonder if Sherrod Brown could be their magic man Biden family adopts a dog Entrepreneur touts big solutions, endorsements in discussing presidential bid MORE, Massachusetts Sen. Elizabeth WarrenElizabeth Ann WarrenSenate barrels toward showdown over Trump's court picks Sherrod Brown says he has 'no real timetable' for deciding on 2020 presidential run Banking panel showcases 2020 Dems MORE (D), Vermont Sen. Bernie SandersBernard (Bernie) SandersDems wonder if Sherrod Brown could be their magic man My fellow Democrats should watch their language: Economic equality is not a rational societal goal As Democrats gear up to challenge Trump in 2020, the key political divide will be metropolitan versus rural MORE (I), New Jersey Sen. Cory BookerCory Anthony BookerSome of us Midwesterners think maybe Amy Klobuchar would do OK as president Banking panel showcases 2020 Dems Dems wonder if Sherrod Brown could be their magic man MORE (D), California Sen. Kamala HarrisKamala Devi HarrisSome of us Midwesterners think maybe Amy Klobuchar would do OK as president Banking panel showcases 2020 Dems Gorka: John F. Kennedy wouldn't be allowed in Democratic Party MORE (D), former New York City Mayor Michael Bloomberg and former Secretary of State Hillary ClintonHillary Diane Rodham ClintonRetired lieutenant general tears into Trump over attacks against Navy SEAL: 'Disgusting' Retired admiral who oversaw bin Laden raid doubles down on Trump criticism Trump dismisses criticism from Navy SEAL who led Osama bin Laden mission 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