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Poll: Sanders now leading 2020 Democrats by 15 points

Progressive Sen. Bernie SandersBernie SandersOvernight Energy: Biden seeks to reassert US climate leadership | President to 'repeal or replace' Trump decision removing protections for Tongass | Administration proposes its first offshore wind lease sale On The Money: Democrats wary of emerging bipartisan infrastructure deal, warn of time crunch Out-of-touch Democrats running scared of progressives MORE (I-Vt.) has jumped out to a double-digit lead over the rest of the 2020 Democratic primary field, appearing to cement his position as the front-runner to win the party's presidential nomination, according to a new ABC News-Washington Post poll

The survey found that 32 percent of Democrats and Democratic-leaning independents favor Sanders, an 8-point increase from a similar poll conducted last month. Meanwhile, former Vice President Joe BidenJoe BidenPutin says he's optimistic about working with Biden ahead of planned meeting How the infrastructure bill can help close the digital divide Biden meets Queen Elizabeth for first time as president MORE's support dropped 11 points to 17 percent, giving Sanders a 15-point lead against his nearest competitor. The 15-point margin is nearly double Biden's biggest lead in the ABC News-Washington Post surveys during the 2020 cycle. 

Former New York City Mayor Mike Bloomberg, who will appear in his first 2020 presidential debate in Nevada on Wednesday night, trails Biden in third with 14 percent support. The figure represents a 6-point climb since January. 

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The rest of the field had little movement over the past month. Sen. Elizabeth WarrenElizabeth WarrenMark Cuban: ProPublica 'not being honest' about taxes on wealthy On The Money: Bipartisan Senate group rules out tax hikes on infrastructure | New report reignites push for wealth tax New report reignites push for wealth tax MORE's (D-Mass.) support stayed stagnant at 11 percent, while former South Bend, Ind., Mayor Pete ButtigiegPete ButtigiegButtigieg: Bipartisan deal on infrastructure 'strongly preferred' OVERNIGHT ENERGY: Biden ends infrastructure talks with key Republican | Colonial Pipeline CEO grilled over ransomware attack | Texas gov signs bills to improve power grid after winter storm Biden ends infrastructure talks with key Republican MORE experienced a 2-point jump to 7 percent support. Buttigieg appears to be leading the field in the delegate count, but he has struggled to form a diverse coalition of support outside of predominantly white early voting states like Iowa and New Hampshire. 

Sen. Amy KlobucharAmy KlobucharHouse unveils antitrust package to rein in tech giants Democrats reintroduce bill to create 'millionaires surtax' Senate Democrats befuddled by Joe Manchin MORE (D-Minn.), who finished in third in New Hampshire after a strong debate performance, has just 6 percent support in the new poll. 

The survey indicates that Sanders is beginning to gain key support on the electability question, which has dominated the Democratic primary. Thirty percent of respondents said that they thought the self-described democratic socialist had the best chance of defeating President TrumpDonald TrumpTrump DOJ demanded metadata on 73 phone numbers and 36 email addresses, Apple says Putin says he's optimistic about working with Biden ahead of planned meeting Biden meets Queen Elizabeth for first time as president MORE, a 12-point jump since January. 

Just 19 percent of respondents said that Biden had the best chance of beating Trump, a sizable 19-point dip since last month. Eighteen percent of Democratic and Democratic-leaning voters say Bloomberg has the best shot to win the White House. No other candidate received double-digit support in that category. 

The ABC News-Washington Post survey falls in line with other polls focused on the Democratic race. An NPR–PBS NewsHour–Marist poll released on Tuesday found Sanders with a 12-point lead over the field. 

His rise has coincided with a similar upward climb from Bloomberg, the billionaire businessman who is pouring hundreds of millions of dollars into his campaign. Several Democratic candidates have criticized Bloomberg's presidential bid.

The ABC News-Washington Post survey was conducted among a random national sample of 1,066 adults between Feb. 14 and Feb. 17. It has a margin of error of 3.5 percentage points.