Sanders takes lead in new Hill/HarrisX poll

Sen. Bernie SandersBernie SandersThe Memo: Trump leaves changed nation in his wake Cori Bush dismisses concerns of being 'co-opted' by establishment The Memo: Biden prepares for sea of challenges MORE (I-Vt.) leads for the first time in a new Hill/HarrisX poll of the Democratic presidential race, just days before the next nominating contest in Nevada.

Sanders draws 22 percent support in the survey, followed by former Vice President Joe BidenJoe BidenTrump grants clemency to more than 100 people, including Bannon Scalise bringing Donna Brazile as guest to Biden inauguration Sidney Powell withdraws 'kraken' lawsuit in Georgia MORE at 19 percent and former New York City Mayor Michael BloombergMichael BloombergBiden selects Gina Raimondo for Commerce chief: reports 7 surprise moments from a tumultuous year in politics NFL, politics dominate 2020 ratings MORE at 18 percent.

Sanders and Bloomberg have both risen 2 points in the poll since earlier this month, while Biden has ticked down 4 points. All three candidates are within the poll's margin of error.

Sen. Elizabeth WarrenElizabeth WarrenBiden pick for Pentagon cruises through confirmation hearing Senate Democrats call on Biden to immediately invoke Defense Production Act Biden consumer bureau pick could take over agency on Inauguration Day MORE (D-Mass.) and former South Bend, Ind., Mayor Pete ButtigiegPete ButtigiegOVERNIGHT ENERGY: Senate majority offers Biden new avenues on Trump environmental rollbacks | Democrats eye action on range of climate bills | Biden pushing to cancel Keystone XL pipeline as soon as he takes office: reports Biden rolls out group of deputy secretary nominees On The Money: Retail sales drop in latest sign of weakening economy | Fast-food workers strike for minimum wage | US officials raise concerns over Mexico's handling of energy permits MORE (D) both ticked up in the poll and are now drawing double-digit support.

Warren, who gained 3 points compared to a poll earlier this month, stands at 12 percent support, while Buttigieg gained 1 point and is at 10 percent.

Sen. Amy KlobucharAmy KlobucharSenate Democrats call on Biden to immediately invoke Defense Production Act Senate Democrats make democracy reform first bill of new majority Google completes Fitbit acquisition MORE (D-Minn.) and billionaire Tom SteyerTom SteyerOn The Trail: The political losers of 2020 Biden Cabinet picks largely unify Democrats — so far Late donor surges push election spending projections to new heights MORE follow the pack at 5 percent and 3 percent, respectively. Rep. Tulsi GabbardTulsi GabbardTulsi Gabbard blasts new House rules on gender neutral language as 'height of hypocrisy' A vaccine, a Burrito and more: 7 lighter, memorable moments from 2020 Growing number of House Republicans warm to proxy voting MORE (D-Hawaii) did not register support in the poll.

The survey indicates that the Democratic White House race remains fluid, with 8 percent of Democratic and Democratic-leaning independent voters saying they are unsure who they support.

"Nationally, the Democratic contest is increasingly starting to look like a three way race between Sanders, Biden and Bloomberg. Bloomberg has been growing steadily and is within striking range of both other candidates among Democrats and Democratic leaning independents," Dritan Nesho, Founder and CEO of HarrisX, told The Hill.

"Bloomberg’s first debate performance, and Biden’s overall showing, in the Nevada primary will determine the future dynamic of the race," he added.

Six top Democratic contenders are set to face off in the party's 9th presidential debate on Wednesday night in Nevada as the candidates compete ahead of the state's caucuses on Saturday.

Sanders is entering the debate as a clear frontrunner in polls, while the Las Vegas debate will also feature Bloomberg on stage with other candidates for the first time.

"Sanders has positioned himself as the leader in the Democratic sweepstakes by attracting 54% of the potential Democratic electorate under 45 years of age, and 46% who consider themselves as progressives," Lee Miringoff, director of the Marist Poll, told The Hill.

"No other Democratic candidate breaks 20% with younger voters or progressives. He is also running up the score among male voters in the potential D Democratic electorate with 41%. Again, no other Democratic candidate breaks 20% with this group. And, Sanders has gotten within the margin of error among African American voters against Biden by gaining 28% of these voters to 31% for Biden."  

"For these, reasons, Sanders is the front-runner going into the debate," he added.

The Hill-HarrisX poll was conducted online among 449 registered Democratic and Democratic-leaning independent voters between Feb. 14 and 15. It has a margin of error of plus or minus 4.6 percentage points. 

—Gabriela Schulte