‘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 TrumpBill Kristol resurfaces video of Pence calling Obama executive action on immigration a 'profound mistake' ACLU says planned national emergency declaration is 'clear abuse of presidential power' O'Rourke says he'd 'absolutely' take down border wall near El Paso if he could 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 BidenO’Rourke heading to Wisconsin amid 2020 speculation NBC, CNN to host first two Democratic presidential primary debates Feinstein says she thinks Biden will run after meeting with him MORE, Massachusetts Sen. Elizabeth WarrenElizabeth Ann WarrenWarren's 'ultra wealth' tax is misleading Hillicon Valley: New York says goodbye to Amazon's HQ2 | AOC reacts: 'Anything is possible' | FTC pushes for record Facebook fine | Cyber threats to utilities on the rise O’Rourke heading to Wisconsin amid 2020 speculation MORE (D), Vermont Sen. Bernie SandersBernard (Bernie) SandersHillicon Valley: New York says goodbye to Amazon's HQ2 | AOC reacts: 'Anything is possible' | FTC pushes for record Facebook fine | Cyber threats to utilities on the rise O’Rourke heading to Wisconsin amid 2020 speculation Amazon to pay Bernie Sanders in federal income taxes: report MORE (I), New Jersey Sen. Cory BookerCory Anthony BookerO’Rourke heading to Wisconsin amid 2020 speculation 2020 Dems slam Trump's plan to declare national emergency NBC, CNN to host first two Democratic presidential primary debates MORE (D), California Sen. Kamala HarrisKamala Devi HarrisHillicon Valley: New York says goodbye to Amazon's HQ2 | AOC reacts: 'Anything is possible' | FTC pushes for record Facebook fine | Cyber threats to utilities on the rise O’Rourke heading to Wisconsin amid 2020 speculation 2020 Dems slam Trump's plan to declare national emergency MORE (D), former New York City Mayor Michael Bloomberg and former Secretary of State Hillary ClintonHillary Diane Rodham ClintonO’Rourke heading to Wisconsin amid 2020 speculation The Hill's 12:30 Report — Presented by Kidney Care Partners — Lawmakers scramble as shutdown deadline nears Exclusive: Biden almost certain to enter 2020 race 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