Former Vice President Joe Biden Joe BidenThe Memo: Warning signs flash for Trump on debates Senate Republicans signal openness to working with Biden National postal mail handlers union endorses Biden MORE leads in a new Hill/HarrisX Democratic Preference poll, surging after his forceful performance in the South Carolina primary this past Saturday.

After steadily declining in the national poll for weeks following his lackluster showings in Iowa, New Hampshire, and Nevada, Biden received 28 percent in the March 1-2 survey, an 11 percentage point jump from last week.

Democratic rival, Sen. Bernie Sanders Bernie SandersSenate Republicans signal openness to working with Biden Hillicon Valley: DOJ indicts Chinese, Malaysian hackers accused of targeting over 100 organizations | GOP senators raise concerns over Oracle-TikTok deal | QAnon awareness jumps in new poll Schumer, Sanders call for Senate panel to address election security MORE (I-Vt.) dipped 5 points in the poll to 23 percent. Billionaire Michael Bloomberg Michael BloombergThe Hill's 12:30 Report - Presented by Facebook - Latest with the COVID-19 relief bill negotiations The Memo: 2020 is all about winning Florida The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Trump, Biden renew push for Latino support MORE trails at 20 percent.

Super Tuesday will be the first time Bloomberg, the former mayor of New York, will be on the ballot. He skipped the first four contests.

Sen. Elizabeth Warren Elizabeth WarrenNo new taxes for the ultra rich — fix bad tax policy instead Democrats back away from quick reversal of Trump tax cuts It's time for newspapers to stop endorsing presidential candidates MORE (D-Mass.), who has yet to turn in formidable results in the early voting contests, won 11 percent, a 3-point tick up from last week.

Rep. Tulsi Gabbard Tulsi GabbardRepublicans call on DOJ to investigate Netflix over 'Cuties' film Hispanic Caucus campaign arm endorses slate of non-Hispanic candidates Gabbard says she 'was not invited to participate in any way' in Democratic convention MORE (D-Hawaii) received 2 percent support and 10 percent of voters are still unsure.

The poll was conducted nationally among registered voters prior to Sen. Amy Klobuchar Amy KlobucharEPA delivers win for ethanol industry angered by waivers to refiners It's time for newspapers to stop endorsing presidential candidates Biden marks anniversary of the Violence Against Women Act, knocks Trump and McConnell MORE (D-Mnn.) announcing that she would be leaving the horse race. She received 3 percent.

This survey aligns with a slew of new data finding a significant surge in support for Biden ahead of tonight's Super Tuesday contests where approximately one-third of all pledged the delegates will be up for grabs.

The Hill-HarrisX poll was conducted online among 453 registered Democratic and Democratic-leaning independent voters between March 1 and 2. It has a margin of error of plus or minus 4.6 percentage points.

—Gabriela Schulte