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 holds a double-digit lead over the rest of the Democratic presidential field, including his closest rival Sen. 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.) ahead of Tuesday night's Democratic debate, according to a poll.

The Morning Consult poll released Monday shows 32 percent of likely Democratic primary voters nationwide support Biden while 21 percent say they back Warren.

ADVERTISEMENT

Sen. 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.) was the only other candidate in double digits, gaining support from 19 percent of primary voters. He was trailed by 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.) with support from 6 percent of voters 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 (D) with 5 percent.

Biden was down 1 percentage point from the previous week, while the other candidates' support rates remained consistent.

Researchers surveyed 15,683 people who indicate they may vote in the Democratic primary or caucus. The results have a margin of error of plus or minus 1 percentage point.

Biden, Warren, Sanders, Harris and Buttigieg are among a dozen Democratic candidates who will face off in Tuesday night's debate in Westerville, Ohio.