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

Former Vice President Joe BidenJoe BidenJulián Castro: It's time for House Democrats to 'do something' about Trump Warren: Congress is 'complicit' with Trump 'by failing to act' Sanders to join teachers, auto workers striking in Midwest 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 SandersSanders to join teachers, auto workers striking in Midwest Krystal Ball tears into 'Never Trump' Republicans 2020 Democrats defend climate priorities in MSNBC forum 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'RourkeNRA deems O'Rourke 'Salesman of the Month' after Arizona gun store sells out of AR-15s during 'Beto Special' MSNBC Climate Change Forum draws 1.3M viewers in 8 pm timeslot The Hill's 12:30 Report: Trump pushes back over whistleblower controversy MORE (D-Texas), who announced his bid for the presidency this month following his defeat to Sen. Ted CruzRafael (Ted) Edward CruzState Department's top arms control official leaving Sanders NASA plan is definitely Earth first Trump judicial picks face rare GOP opposition MORE (R-Texas) in November's midterm elections, sits in third place in the poll with 12 percent, while Sen. Kamala HarrisKamala Devi HarrisTrump reignites court fight with Ninth Circuit pick MSNBC Climate Change Forum draws 1.3M viewers in 8 pm timeslot Iowa Steak Fry to draw record crowds for Democrats MORE (D-Calif.) is in fourth with the support of 8 percent of respondents.

Meanwhile, South Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul Buttigieg2020 Democrats defend climate priorities in MSNBC forum MSNBC Climate Change Forum draws 1.3M viewers in 8 pm timeslot Iowa Steak Fry to draw record crowds for Democrats 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 WarrenWarren: Congress is 'complicit' with Trump 'by failing to act' Sanders to join teachers, auto workers striking in Midwest Pelosi wants to change law to allow a sitting president to be indicted 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 TrumpJulián Castro: It's time for House Democrats to 'do something' about Trump Warren: Congress is 'complicit' with Trump 'by failing to act' Sanders to join teachers, auto workers striking in Midwest 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.