Democratic presidential contender 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 saw a surge in support in a new national poll, while backing for 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 and 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.) sunk.

A CNN poll released on Wednesday found support for the South Bend, Ind., mayor jumped among Democrats and Democratic-leaning independents from 6 percent in the network's last national poll in October to 11 percent.

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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.) also saw his support tick up, within the survey's margin of error, from 16 percent to 17 percent.

Meanwhile, Biden maintained his front-runner status, but his support dropped from 34 percent to 28 percent. Warren's support also dipped from 19 percent to 14 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.), former New York City Mayor Michael Bloomberg Michael BloombergBloomberg rolls out M ad buy to boost Biden in Florida Democratic groups using Bloomberg money to launch M in Spanish language ads in Florida Bloomberg pays fines for 32,000 felons in Florida so they can vote MORE, businessman Andrew Yang Andrew YangBiden's latest small business outreach is just ... awful Doctor who allegedly assaulted Evelyn Yang arrested on federal charges The Hill's Campaign Report: Biden weighs in on police shootings | Who's moderating the debates | Trump trails in post-convention polls MORE and billionaire Tom Steyer Tom SteyerTV ads favored Biden 2-1 in past month Inslee calls Biden climate plan 'perfect for the moment' OVERNIGHT ENERGY: Trump administration finalizes plan to open up Alaska wildlife refuge to drilling | California finalizes fuel efficiency deal with five automakers, undercutting Trump | Democrats use vulnerable GOP senators to get rare win on environment MORE each received 3 percent support.

Sens. Cory Booker Cory Anthony BookerThe movement to reform animal agriculture has reached a tipping point Watchdog confirms State Dept. canceled award for journalist who criticized Trump 3 reasons why Biden is misreading the politics of court packing MORE (D-N.J.) and Amy Klobuchar Amy Klobuchar3 reasons why Biden is misreading the politics of court packing Social media platforms put muscle into National Voter Registration Day Battle lines drawn on precedent in Supreme Court fight MORE (D-Minn.) garnered 2 percent support each.

The poll comes as Buttigieg continues to gain ground in a number of early states and national polls, carving out a four-way race within the crowded Democratic primary.

A Quinnipiac University poll released on Tuesday showed Buttigieg surging to second place at 16 percent support nationally, behind Biden's 24 percent support.

However, the same poll showed that a majority of voters were still uncertain as to who they would ultimately back in the party's 2020 primary.

Biden still led the pack with 35 percent of voters when asked who they would choose if the race came down to the top four contenders. Twenty-three percent said they would choose Sanders, and 20 percent said the same for Warren. Seventeen percent said they would back Buttigieg.

The CNN survey was conducted by SSRS from Nov. 21 to 24 among 1,007 adults with a margin of error of plus or minus 3.7 percentage points. Of the 431 registered voters who identify as Democrats or Democratic-leaning independents, there was a margin of error of plus or minus 5.7 percentage points.