Warren gains on Sanders, Biden in new national poll

Sen. Elizabeth WarrenElizabeth Ann WarrenThe Memo: Sanders-Warren battle could reshape Democratic primary Environmental activists interrupt Buttigieg in New Hampshire Pence to visit Iowa days before caucuses MORE (D-Mass.) is gaining ground on top-tier White House contenders Sen. Bernie SandersBernie SandersBiden alleges Sanders campaign 'doctored video' to attack him on Social Security record Sanders campaign responds to Biden doctored video claims: Biden should 'stop trying to doctor' public record The Memo: Sanders-Warren battle could reshape Democratic primary MORE (I-Vt.) and former Vice President Joe BidenJoe BidenBiden alleges Sanders campaign 'doctored video' to attack him on Social Security record Sanders campaign responds to Biden doctored video claims: Biden should 'stop trying to doctor' public record Capt. "Sully" Sullenberger pens op-ed in defense of Biden: 'I stuttered once, too. I dare you to mock me' MORE, according to a new Hill-HarrisX survey.

The survey released on Tuesday still shows Warren in third place, but she has ticked up four points over the past two weeks to 14 percent support among likely Democratic and independent voters.

Biden, meanwhile, held onto the top spot with 30 percent, but is down 1 percentage point. Sanders placed second at 17 percent and is up 1 point from the Aug. 9-10 poll.

Sen. Kamala HarrisKamala Devi HarrisParnas pressure grows on Senate GOP Sanders defends vote against USMCA: 'Not a single damn mention' of climate change The Hill's Morning Report — President Trump on trial MORE (D-Calif.) tied with South Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegThe Memo: Sanders-Warren battle could reshape Democratic primary Environmental activists interrupt Buttigieg in New Hampshire Pence to visit Iowa days before caucuses MORE for fourth place, with each receiving 4 percent support. 

Former Rep. Beto O’Rourke (D-Texas) rounded out the top five at 3 percent, a 1 point decrease compared to the previous poll.

Sen. Cory BookerCory Anthony BookerSunday shows preview: Lawmakers gear up for Senate impeachment trial DNC announces new criteria for New Hampshire debate The Hill's Campaign Report: Sanders, Warren feud rattles Democrats MORE (N.J.), tech entrepreneur Andrew YangAndrew YangAndrew Yang's wife, Evelyn Yang, calls for 'big structural change' at 4th annual Women's March DNC announces new criteria for New Hampshire debate Poll: Sanders holds 5-point lead over Buttigieg in New Hampshire MORE and Montana Gov. Steve BullockSteve BullockBrent Budowsky: Bloomberg should give billion to Democrats Key moments in the 2020 Democratic presidential race so far Kamala Harris dropped out, but let's keep her mental health plan alive MORE (D) were the only other candidates that polled above 1 percent in the poll. 

The latest results come amid signs that Sanders and Warren are cutting into Biden's lead over the Democratic contenders for the White House, though the former vice president remains the front-runner.

The Hill-HarrisX poll surveyed 465 Democratic and independent registered voters between Aug. 23 and Aug. 24 with a margin of error of plus or minus 4.6 percentage points.

—Tess Bonn