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

Former Vice President Joe BidenJoe BidenThe Hill's Morning Report - Presented by Facebook - White House, Dems play blame game over evictions GOP skepticism looms over bipartisan spending deal Biden vaccine rule sets stage for onslaught of lawsuits MORE and Sen. Bernie SandersBernie SandersThe Hill's Morning Report - Presented by Facebook - White House, Dems play blame game over evictions The Memo: Left pins hopes on Nina Turner in Ohio after recent defeats Five things to watch in two Ohio special election primaries 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 BloombergBipartisan infrastructure win shows Democrats must continue working across the aisle WHO leader issues warning on 'harmful' e-cigarettes Six months in, two challenges could define Biden's presidency MORE surged in the poll to third place, at 16 percent, a 5 percentage point increase from the last survey. Sen. Elizabeth WarrenElizabeth WarrenAmerica's middle class is getting hooked on government cash — and Democrats aren't done yet California Democrats warn of low turnout in recall election Pelosi disputes Biden's power to forgive student loans MORE (D-Mass.) remained steady in the poll, at 9 percent, while Former South Bend, Ind. Mayor Pete ButtigiegPete ButtigiegSunday shows - Delta variant, infrastructure dominate Sunday shows preview: Delta concerns prompt CDC mask update; bipartisan infrastructure bill to face challenges in Senate Chasten Buttigieg: DC 'almost unaffordable' MORE jumped 4 percentage points to tie with Warren.

Sen. Amy KlobucharAmy KlobucharManchin 'can't imagine' supporting change to filibuster for voting rights Hillicon Valley: Democrats urge tech CEOs to combat Spanish disinformation | Amazon fined 6M by EU regulators Democrats urge tech CEOs to combat Spanish disinformation MORE (D-Mn.), entrepreneur Andrew YangAndrew YangPoll: 73 percent of Democratic voters would consider voting for Biden in the 2024 primary Kings launch voting rights effort honoring John Lewis Eric Adams to meet with Biden on curbing gun violence MORE, and billionaire Tom SteyerTom SteyerOvernight Energy: 'Eye of fire,' Exxon lobbyist's comments fuel renewed attacks on oil industry | Celebrities push Biden to oppose controversial Minnesota pipeline | More than 75 companies ask Congress to pass clean electricity standard Celebrities push Biden to oppose controversial Minnesota pipeline Six things to watch as California heads for recall election 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