‘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 TrumpButtigieg on Mueller report: 'Politically, I'm not sure it will change much' Sarah Sanders addresses false statements detailed in Mueller report: 'A slip of the tongue' Trump to visit Japan in May to meet with Abe, new emperor 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 BidenButtigieg says he wouldn't be opposed to having Phish play at his inauguration Poll: Buttigieg surges into contention with Biden, Sanders Buttigieg to fundraise in DC with major Obama, Clinton bundlers next month: report MORE, Massachusetts Sen. Elizabeth WarrenElizabeth Ann WarrenOn The Money: Inside the Mueller report | Cain undeterred in push for Fed seat | Analysis finds modest boost to economy from new NAFTA | White House says deal will give auto sector B boost Sanders announces first endorsements in South Carolina Poll: Buttigieg surges into contention with Biden, Sanders MORE (D), Vermont Sen. Bernie SandersBernard (Bernie) SandersButtigieg says he wouldn't be opposed to having Phish play at his inauguration Sanders announces first endorsements in South Carolina Poll: Buttigieg surges into contention with Biden, Sanders MORE (I), New Jersey Sen. Cory BookerCory Anthony BookerButtigieg says he wouldn't be opposed to having Phish play at his inauguration Sanders announces first endorsements in South Carolina Buttigieg to fundraise in DC with major Obama, Clinton bundlers next month: report MORE (D), California Sen. Kamala HarrisKamala Devi HarrisHarris: Integrity of US justice system 'took a real blow' with Barr's actions Sanders announces first endorsements in South Carolina Poll: Buttigieg surges into contention with Biden, Sanders MORE (D), former New York City Mayor Michael Bloomberg and former Secretary of State Hillary ClintonHillary Diane Rodham ClintonClinton campaign chief: Mueller report 'lays out a devastating case' against Trump Hillicon Valley: Cyber, tech takeaways from Mueller report | Millions of Instagram passwords exposed internally by Facebook | DHS unrolling facial recognition tech in airports | Uber unveils new safety measures after student's killing Heavily redacted Mueller report leaves major questions unanswered 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