Sanders grows lead in new Hill/HarrisX poll

Sen. Bernie SandersBernie SandersThe Memo: Trump team pounces on Biden gaffes The Hill's Campaign Report: US officials say Russia, China are looking to sow discord in election Warren urges investment in child care workers amid pandemic MORE (I-Vt.) is seeing increasing support in the latest Hill/HarrisX national poll following his big win in the Nevada caucuses last weekend.

Sanders received 28 percent support among registered Democratic and Democratic-leaning independent voters in the Feb. 23-24 survey, a 6 percentage point jump from last week's numbers.

Former New York City Mayor Michael BloombergMichael BloombergEverytown on the NRA lawsuit: 'Come November, we're going to make sure they're out of power, too' Hillicon Valley: Trump raises idea of delaying election, faces swift bipartisan pushback | Amazon, Apple, Facebook, Google release earnings reports | Senators ask Justice Department to investigate TikTok, Zoom Meme group joins with Lincoln Project in new campaign against Trump MORE overtook former Vice President Joe BidenJoe BidenBiden says Trump executive order is 'a reckless war on Social Security' Trump got into testy exchange with top GOP donor Adelson: report Blumenthal calls for declassification of materials detailing Russian threat to US elections MORE for second place. Bloomberg ticked up 1 point from 18 percent to 19 percent, while Biden fell to 17 percent support from 19 percent.

Former South Bend, Ind., Mayor Pete ButtigiegPete ButtigiegCNN's Ana Navarro to host Biden roundtable on making 'Trump a one-term president' Former Indiana Gov. Joe Kernan dies How Republicans can embrace environmentalism and win MORE (D) ticked up 2 points to 12 percent in the poll, while Sen. Elizabeth WarrenElizabeth WarrenBiden campaign says no VP pick yet after bike trail quip Biden edges closer to VP pick: Here's who's up and who's down Democratic convention lineup to include Ocasio-Cortez, Clinton, Warren: reports MORE (D-Ma.) dipped 4 points to 8 percent.

Sen. Amy KlobucharAmy KlobucharSenate Democrats demand answers on migrant child trafficking during pandemic Senate Democrats push to include free phone calls for incarcerated people in next relief package Lobbying world MORE (D-Mnn.) and venture capitalist Tom SteyerTom SteyerSteyer endorses reparations bill, commits to working with Jackson Lee Progressive group launches M pro-Biden ad buy targeting young voters The Hill's Campaign Report: Jacksonville mandates face coverings as GOP convention approaches MORE received 3 percent support each in the survey while Rep. Tulsi GabbardTulsi GabbardFinancial firms facing serious hacking threat in COVID-19 era Gabbard drops defamation lawsuit against Clinton It's as if a Trump operative infiltrated the Democratic primary process MORE (D-Hawaii) received 2 percent support. 

Eight percent of voters were still unsure.

Seven Democratic presidential candidates are gathering in Charleston, S.C., on Tuesday night for the tenth Democratic debate, just a few days before the state's primary election. 

Biden has held a lead in polls in South Carolina, but Sanders has closed the gap, according to the latest South Carolina polls.

Though Sanders seems to be riding on post-Nevada momentum and a promising outlook heading into Super Tuesday, some experts believe the contest isn't yet a done deal.

"While Bernie is beginning to put together an impressively diverse coalition that includes a plurality of black and brown voters, his inability to attract the same level of support from white voters, older voters, and from Democrats more broadly, is the reason he seems to plateau around 30 percent in every poll," Terrance Woodbury, Democratic pollster and Partner of Hit Strategies, told The Hill.

"With multiple well-funded candidates with the resources to remain in the race for the long haul, this is the formula for a brokered convention where no one emerges with a clear majority of delegates," he added.

The Hill-HarrisX poll was conducted online among 470 registered Democratic and Democratic-leaning independent voters between Feb. 23 and 24. It has a margin of error of plus or minus 4.5 percentage points.  


—Gabriela Schulte