Poll: Biden leads 2020 Dem field by double digits followed by Sanders, O'Rourke

Former Vice President Joe BidenJoe BidenPerry delegation talking points stressed pushing Ukraine to deal with 'corruption' GOP senator airs anti-Biden ad in Iowa amid impeachment trial Biden photobombs live national news broadcast at one of his rallies MORE holds a double-digit lead over the rest of the 2020 Democratic field in a new poll released Thursday.

In the Quinnipiac University poll, Biden heads the pack with the support of 29 percent of registered Democrats and voters who lean to the left, while Sen. Bernie SandersBernie SandersNew campaign ad goes after Sanders by mentioning heart attack Biden on whether Sanders can unify party as nominee: 'It depends' Steyer rebukes Biden for arguing with supporter he thought was Sanders voter MORE (I-Vt.) holds a second-place ranking with the backing of 19 percent of those surveyed.

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Former Rep. Beto O'RourkeBeto O'RourkeVeronica Escobar to give Spanish-language response to Trump State of the Union address Biden calls for revoking key online legal protection Trump mocks Booker over suspended presidential campaign MORE (D-Texas), who announced his bid for the presidency this month following his defeat to Sen. Ted CruzRafael (Ted) Edward CruzCruz scolds reporter who brought up his daughters Can Democrats flip the Texas House? Today's result will provide a clue Republicans show little enthusiasm for impeachment witness swap MORE (R-Texas) in November's midterm elections, sits in third place in the poll with 12 percent, while Sen. Kamala HarrisKamala Devi HarrisSanders allies in new uproar over DNC convention appointments Biden leads 2020 pack in congressional endorsements Harris on 2020 endorsement: 'I am not thinking about it right now' MORE (D-Calif.) is in fourth with the support of 8 percent of respondents.

Meanwhile, South Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegBiden on whether Sanders can unify party as nominee: 'It depends' Biden lines up high-profile surrogates to campaign in Iowa Hill.TV's Krystal Ball: Failure to embrace Sanders as nominee would 'destroy' Democratic Party MORE (D) has surged in the polls since the announcement of his exploratory committee and was tied for fifth place with Sen. Elizabeth WarrenElizabeth Ann WarrenBiden on whether Sanders can unify party as nominee: 'It depends' Overnight Health Care — Presented by Philip Morris International — HHS has no plans to declare emergency over coronavirus | GOP senator calls for travel ban to stop outbreak | Warren releases plan to contain infectious diseases Biden lines up high-profile surrogates to campaign in Iowa MORE (D-Mass.), each earning the support of 4 percent of voters.

The poll provides Democrats with some other data to be optimistic about: Fifty-three percent of those surveyed said that they would not support President TrumpDonald John TrumpCNN's Don Lemon explains handling of segment after Trump criticism NPR reporter after Pompeo clash: Journalists don't interview government officials to score 'political points' Lawyer says Parnas can't attend Senate trial due to ankle bracelet MORE in the 2020 election regardless of which Democrat wins the primary.

"Hungry for a candidate to take on President Donald Trump, Democrats and Democratic leaners put the three B's, Biden, Bernie and Beto, at the top in a race where age, race and gender take a back seat to electability and shared views," Tim Malloy, the poll's assistant director, said in the press release.

Quinnipiac's survey contacted 1,358 registered voters and has a margin of error of plus or minus 3.3 percentage points. For Democrats and Democratic-leaning voters samples, the margin of error is plus or minus 5.1 percentage points.