Poll: Biden leads 2020 Democrats, Warren surges to third behind Sanders

Former Vice President Joe BidenJoe BidenButtigieg campaign claims 'irregularities' in Nevada caucuses Poll: Sanders leads 2020 Democratic field with 28 percent, followed by Warren and Biden More than 6 in 10 expect Trump to be reelected: poll MORE leads the pack of Democratic presidential candidates, but Sen. Elizabeth WarrenElizabeth Ann WarrenPoll: Sanders leads 2020 Democratic field with 28 percent, followed by Warren and Biden More than 6 in 10 expect Trump to be reelected: poll Sanders has wide leads in two of three battleground states: survey MORE (D-Mass.) is on the rise, according to a Harvard CAPS/Harris poll released exclusively to The Hill.

The survey shows Biden in first place with 32 percent support among Democrats, followed by Sen. Bernie SandersBernie SandersSchiff blasts Trump for making 'false claims' about Russia intel: 'You've betrayed America. Again.' Buttigieg campaign claims 'irregularities' in Nevada caucuses Poll: Sanders leads 2020 Democratic field with 28 percent, followed by Warren and Biden MORE (I-Vt.) at 16 percent, both falling slightly from the previous poll.

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But Warren isn’t far behind. The new poll pegs her support at 13 percent — a 5-point jump since the last Harvard CAPS/Harris poll was conducted in the wake of the July Democratic presidential debates in Detroit. 

That places her third, replacing Sen. Kamala HarrisKamala Devi HarrisClyburn: Biden 'suffered' from not doing 'enough' in early debates Sanders is a risk, not a winner House to vote on legislation to make lynching a federal hate crime MORE (D-Calif.) who came in fourth place with 7 percent support in the latest poll. South Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegButtigieg campaign claims 'irregularities' in Nevada caucuses Poll: Sanders leads 2020 Democratic field with 28 percent, followed by Warren and Biden 9-year-old asks Buttigieg how to be strong and tell people he is gay too MORE and former Rep. Beto O’Rourke (D-Texas) tied for fifth place with 4 percent support.

Only two other candidates notched above 1 percent in the survey: Sen. Cory BookerCory Anthony BookerNew Jersey Gov. Phil Murphy announces tumor on kidney, will undergo treatment The Hill's 12:30 Report: Dem anxiety grows ahead of Super Tuesday House to vote on legislation to make lynching a federal hate crime MORE (D-N.J.), with 3 percent, and former tech executive Andrew YangAndrew YangYang calls on someone to 'pull an Andrew Yang' and bow out of 2020 race Yang criticizes caucus voting method, says they don't encourage high voter turnout Nevada caucuses open with a few hiccups MORE, with 2 percent.

While Biden still holds a comfortable lead over his closest competitors, his support is down 2 points from the last Harvard CAPS/Harris poll. No candidate gained more in the latest survey than Warren, who has been steadily climbing in public polls for months.

“Biden continues in our poll to have a steady lead above his rivals but that lead in the low 30s is no guarantee of the nomination,” Mark PennMark PennFree Roger Stone Sanders drags Democrats to the left; will it be 1972 all over again? Majority of voters want Trump to address health care in State of the Union: poll MORE, the co-director of the Harvard CAPS/Harris poll, said. 

“He has to show some movement soon as others are gaining in excitement and momentum. There may be scores of candidates in the race but only a few of them are getting to double digits.”

Still, Biden remains the candidate that voters see as having the best chance of defeating President TrumpDonald John TrumpSchiff blasts Trump for making 'false claims' about Russia intel: 'You've betrayed America. Again.' Poll: Sanders leads 2020 Democratic field with 28 percent, followed by Warren and Biden More than 6 in 10 expect Trump to be reelected: poll MORE in 2020. Thirty-six percent of respondents pointed to the vice president as the most formidable challenger to the president, while 13 percent chose Sanders and 8 percent picked Warren. 

The Harvard CAPS/Harris poll surveyed 985 registered Democratic voters from Aug. 26-28. The poll is a collaboration of the Center for American Political Studies at Harvard University and The Harris Poll. The Hill will be working with Harvard CAPS/Harris Poll throughout 2019.

Full poll results will be posted online later this week. The Harvard CAPS/Harris Poll survey is an online sample drawn from the Harris Panel and weighted to reflect known demographics. As a representative online sample, it does not report a probability confidence interval.