Biden, Sanders contend for top spot, Bloomberg sees surge in Hill/HarrisX poll

Former Vice President Joe BidenJoe BidenJoe Biden looks to expand election battleground into Trump country Trump puts Supreme Court fight at center of Ohio rally Special counsel investigating DeVos for potential Hatch Act violation: report MORE and Sen. Bernie SandersBernie SandersJacobin editor: Primarying Schumer would force him to fight Trump's SCOTUS nominee Trump campaign plays up Biden's skills ahead of Cleveland debate: 'He's actually quite good' Young voters backing Biden by 2:1 margin: poll MORE (I-Vt.) are neck-and-neck in a battle for first place in a new Hill/HarrisX 2020 preference national poll.

In the Feb. 7-10 survey, 23 percent of Democratic and Democratic-leaning voters favored Joe Biden while 20 percent preferred Sanders. 

While the Vermont senator gained 3 percentage points from the last democratic preference poll, Biden dropped 6 percentage points.

Former New York City Mayor Michael BloombergMichael BloombergTop Democratic super PAC launches Florida ad blitz after Bloomberg donation The Hill's 12:30 Report - Presented by Facebook - Latest with the COVID-19 relief bill negotiations The Memo: 2020 is all about winning Florida MORE surged in the poll to third place, at 16 percent, a 5 percentage point increase from the last survey. Sen. Elizabeth WarrenElizabeth WarrenJudd Gregg: The Kamala threat — the Californiaization of America GOP set to release controversial Biden report Biden's fiscal program: What is the likely market impact? MORE (D-Mass.) remained steady in the poll, at 9 percent, while Former South Bend, Ind. Mayor Pete ButtigiegPete ButtigiegBipartisan praise pours in after Ginsburg's death Bogeymen of the far left deserve a place in any Biden administration Overnight Defense: Woodward book causes new firestorm | Book says Trump lashed out at generals, told Woodward about secret weapons system | US withdrawing thousands of troops from Iraq MORE jumped 4 percentage points to tie with Warren.

Sen. Amy KlobucharAmy KlobucharBattle lines drawn on precedent in Supreme Court fight Sunday shows - Ruth Bader Ginsburg's death dominates Klobuchar: GOP can't use 'raw political power right in middle of an election' MORE (D-Mn.), entrepreneur Andrew YangAndrew YangDoctor 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 Buttigieg launches his own podcast MORE, and billionaire Tom SteyerTom 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 all received 3 percent in the poll. 

All other candidates received 2 percent or less and 11 percent of voters are still undecided.

Despite his recent drop in the polls, experts have noted Biden's strong support among African Americans and older voters, a factor that might keep him at the top of the leaderboard nationally, if support holds. 

"Biden’s strength with African Americans and older voters is keeping him at the top of the polls, though Sanders base is loyal," Molly Murphy, Democratic pollster and Partner of ALG Research told The Hill.

"What is interesting is that in the last 10 or so days, Mike Bloomberg is beginning to surge, outperforming Buttigieg on the heels of his Iowa win, and only slightly behind Sanders and Biden," she added.

Sanders and Bloomberg have gained ground in other nation-wide surveys, including recent Quinnipiac University and Monmouth University polls.

The candidates face off tonight in New Hampshire in the first primary election of the season, where Sanders has been leading in recent surveys.

The Hill-HarrisX poll was conducted online among 913 registered Democratic and Democratic-leaning Independent voters between Feb. 7 and 10. It has a margin of error of plus or minus 3.2 percentage points.

 — Gabriela Schulte