‘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 TrumpForget the spin: Five unrefuted Mueller Report revelations Lara Trump: Merkel admitting migrants 'one of the worst things that ever happened to Germany' Financial satisfaction hits record high: survey 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 BidenElection analyst says Biden could face uphill battle attracting small-dollar donors Biden's announcement was a general election message, says political analyst Gillibrand 'not worried' about being 'discounted' in 2020 race MORE, Massachusetts Sen. Elizabeth WarrenElizabeth Ann WarrenColbert links large 2020 Dem field to Avengers: 'A group of every available person in the universe' Seven big decisions facing Biden in 2020 primary Sanders dominates, Buttigieg surges in 2020 social media battle MORE (D), Vermont Sen. Bernie SandersBernard (Bernie) SandersElection analyst says Biden could face uphill battle attracting small-dollar donors Gillibrand 'not worried' about being 'discounted' in 2020 race Biden's sloppy launch may cost him MORE (I), New Jersey Sen. Cory BookerCory Anthony BookerBooker fundraises off Biden announcement The symbol of 'Wakanda' and black political vision The Hill's Morning Report - Trump tells House investigators 'no' MORE (D), California Sen. Kamala HarrisKamala Devi HarrisThe symbol of 'Wakanda' and black political vision Seven big decisions facing Biden in 2020 primary Sanders dominates, Buttigieg surges in 2020 social media battle MORE (D), former New York City Mayor Michael Bloomberg and former Secretary of State Hillary ClintonHillary Diane Rodham ClintonForget the spin: Five unrefuted Mueller Report revelations Former senators launching effort to help Dems win rural votes Biden's announcement was a general election message, says political analyst 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