A new national survey of the Democratic presidential primary finds a three-way race for the nomination, with former Vice President Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE barely leading Sens. Bernie Sanders Bernie SandersSirota reacts to report of harassment, doxing by Harris supporters Republicans not immune to the malady that hobbled Democrats The Hill's Morning Report - Sponsored by Facebook - Republicans lawmakers rebuke Trump on election MORE (I-Vt.) and Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (D-Mass.).

The latest poll from The Economist-YouGov finds Biden at 22 percent support, followed by Sanders at 19 percent and Warren at 17 percent. Sen. Kamala Harris Kamala HarrisTexas Democratic official urges Biden to visit state: 'I thought he had his own plane' The Hill's Campaign Report: Biden on Trump: 'He'll leave' l GOP laywers brush off Trump's election remarks l Obama's endorsements A game theorist's advice to President Trump on filling the Supreme Court seat MORE (D-Calif.) registers 8 percent support and South Bend, Ind., Mayor Pete Buttigieg Pete ButtigiegBillionaire who donated to Trump in 2016 donates to Biden The Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November Buttigieg stands in as Pence for Harris's debate practice MORE comes in at 7 percent.

The Economist-YouGov survey finds a closer race nationally than most other polls. Biden leads the field by nearly 13 points in the RealClearPolitics average, with most other recent surveys putting his level of support in the 30 percent range.

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Sanders has surged back into contention, according to the new poll, gaining more than any other candidate over the same survey from last month. That poll found Biden at 25 percent, followed by Warren at 18 and Sanders at 13.

But Warren might have the most room to grow — 50 percent of Democrats surveyed said they’re considering voting for her, compared to 45 percent who said the same of Biden and 44 percent who said they’re considering Sanders.

A strong majority of Democrats, 60 percent, said they would prefer to nominate a candidate who can defeat President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE over a candidate who agrees with them on the issues.

The Economist-YouGov survey of 1,500 U.S. adults was conducted between Aug. 17 and 20 and has a margin of error of 2.6 percentage points. The Economist-YouGov pulls from a recruited panel of more than 10,000 respondents who are surveyed regularly.