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 leads the crowded Democratic presidential primary field by double digits in the state of Maryland, according to a poll released Wednesday.

Biden has the support of 33 percent of likely Democratic voters in the state, according to the Goucher College survey. He was followed by Sens. 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.) with 21 percent, 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.) with 10 percent and 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 6 percent. Five percent of Democratic likely voters support 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).

The survey found that 15 percent of respondents were undecided or had no preference.

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“Joe Biden and Elizabeth Warren are currently the frontrunners among Maryland Democratic likely voters,” said Mileah Kromer, director of the Sarah T. Hughes Field Politics Center at Goucher College, in a statement. “Democrats in Maryland are divided over whether they want a more moderate or progressive nominee."

The poll found that 42 percent of Democratic likely voters say they would prefer a moderate nominee while 45 percent prefer a progressive one.

Researchers surveyed 300 Maryland Democratic likely voters between Sept. 13 and Sept. 19. The results have a margin of error of plus or minus 5.6 percent.

The survey was Goucher's first 2020 poll. Maryland's primary contest will take place in April.

There are currently more than a dozen people running for the 2020 Democratic presidential nomination.