Biden retains large lead over Sanders, other 2020 Dems in new Hill-HarrisX poll

Former Vice President Joe BidenJoe Biden22 presidential candidates to attend Clyburn's South Carolina fish fry 22 presidential candidates to attend Clyburn's South Carolina fish fry Young Turks founder says Democrats should avoid repeat of 2016 and pick a progressive MORE continues to lead an ever-growing pack of Democratic White House hopefuls, according to a Hill-HarrisX poll released Wednesday.

The May 17-18 survey found Biden was the preferred pick to become president of 33 percent of registered voters who identified as Democrats or as independents who leaned toward the party.

Sen. Bernie SandersBernie SandersKamala Harris rallies with McDonald's workers striking for higher wages Kamala Harris rallies with McDonald's workers striking for higher wages Playing fast and loose with the economic facts MORE (I-Vt.) was the choice of 14 percent of respondents. Massachusetts Democratic Sen. Elizabeth WarrenElizabeth Ann WarrenFive takeaways from first Democratic debate lineup Five takeaways from first Democratic debate lineup Black Economic Alliance official says African-American voters will 'determine who sits in the White House' MORE was named by 8 percent followed by mayor Pete ButtigiegPeter (Pete) Paul ButtigiegFive takeaways from first Democratic debate lineup Five takeaways from first Democratic debate lineup Democratic presidential hopefuls react to debate placement MORE and Sen. Kamala HarrisKamala Devi HarrisKamala Harris rallies with McDonald's workers striking for higher wages Kamala Harris rallies with McDonald's workers striking for higher wages 22 presidential candidates to attend Clyburn's South Carolina fish fry MORE (D-Calif.) both with 6 percent. Former Rep. Beto O'RourkeBeto O'RourkeDemocratic presidential hopefuls react to debate placement Democratic presidential hopefuls react to debate placement Teachers union to host 2020 Democratic presidential forum focused on education MORE was backed by 5 percent of respondents.

None of the other candidates received more than 1 percent support. Several aspirants were not named by any participant: Gov. Steve BullockSteve Bullock22 presidential candidates to attend Clyburn's South Carolina fish fry 22 presidential candidates to attend Clyburn's South Carolina fish fry Five takeaways from first Democratic debate lineup MORE (D-Mont.), former Colorado Democratic Gov. John HickenlooperJohn Wright HickenlooperDemocratic presidential hopefuls react to debate placement Democratic presidential hopefuls react to debate placement The Hill's 12:30 Report — Presented by MAPRx — Biden, Sanders to share stage at first DNC debate MORE, Gov. Jay InsleeJay Robert InsleeDemocratic presidential hopefuls react to debate placement Democratic presidential hopefuls react to debate placement The Hill's 12:30 Report — Presented by MAPRx — Biden, Sanders to share stage at first DNC debate MORE (D-Washington), Rep. Eric SwalwellEric Michael SwalwellDemocratic presidential hopefuls react to debate placement Democratic presidential hopefuls react to debate placement Swalwell to pitch gun control plan near NRA headquarters MORE (D-Calif.), former Sen. Mike Gravel (D-Alaska), Florida mayor Wayne MessamWayne Martin MessamThe Hill's 12:30 Report — Presented by MAPRx — Biden, Sanders to share stage at first DNC debate The Hill's 12:30 Report — Presented by MAPRx — Biden, Sanders to share stage at first DNC debate Biden, Sanders, Buttigieg to debate; Warren on separate night MORE, and author Marianne WilliamsonMarianne WilliamsonFive takeaways from first Democratic debate lineup Five takeaways from first Democratic debate lineup Democratic presidential hopefuls react to debate placement MORE.

A large number of respondents, 19 percent, were undecided.

While she still trails the leading two candidates, Warren's support has increased across several different polls in recent weeks but it has come at Sanders' expense, Emma Vigeland, a correspondent with the progressive video network The Young Turks, told Hill.TV on Wednesday.

"Warren is rising and rightly so and she's cutting into that Bernie Sanders chunk which I believe is substantial and not going anywhere," she told "What America's Thinking" host Jamal Simmons.

Biden was more popular among women than among men. Thirty-nine percent of female respondents named the former vice president as their choice while 25 percent of male respondents said the same.

Sanders was the top choice for Democratic-leaning voters between the ages of 18 and 34 while Biden led among older age groups.

Nearly half of respondents (47 percent) who were 65 and older said the former veep was their choice. Biden was backed by 42 percent of participants between 50 and 64 and 35 percent of those between 35 and 49.

Among respondents who were 34 and younger, Sanders was the top pick of 24 percent. Thirteen percent chose Biden while 11 percent named Warren.

The former vice president fared better among respondents whose annual household income was $75,000 or greater than among those earning less than that amount.

Biden was preferred by 30 percent of respondents in the lower-income group and by 38 percent of respondents in the higher-income cohort.

Sanders was supported by 18 percent of Democratic-leaning voters with incomes less than $75,000 while only 8 percent of those earning more than this amount supported him.

The former vice president was the overwhelming favorite among respondents who classified themselves as "moderate" ideologically with 43 percent backing him. No other candidate received double-digit support from this group.

Biden was also the top pick among respondents who described themselves as politically liberal but by a much closer margin. Of the 221 participants who said they were either "strong" or "lean" liberals, the former veep was named by 28 percent while 17 percent named Sanders and 13 percent chose Warren.

Those findings echo earlier polls which indicate that Democratic voters place a much greater priority on defeating President TrumpDonald John TrumpDC board rejects Trump Hotel effort to dismiss complaint seeking removal of liquor license on basis of Trump's 'character' DC board rejects Trump Hotel effort to dismiss complaint seeking removal of liquor license on basis of Trump's 'character' Mexico's immigration chief resigns amid US pressure over migrants MORE in 2020 than on ideological agreement. A May 10-11 Hill-HarrisX survey found that 65 percent of Democrats or independents who leaned toward the party said they would pick a candidate they believed had a stronger chance of winning the general election over one who agreed with them on their top policy issue.

A March USA Today-Suffolk University poll had similar findings, as did an April survey commissioned by a Pennsylvania newspaper of registered Democrats living in the state.

The latest Hill-HarrisX survey was conducted May 17-18 among a statistically representative online panel of 1,030 registered voters with a 95 percent confidence level and a sampling margin of error of 3.1 percentage points. The 2020 Democratic presidential preference question was asked of a subset of 448 respondents who identified as Democrats or as independents who favored the Democratic Party. The sampling margin of error for the subset is 4.6 percentage points.

—Matthew Sheffield