Biden holds two-to-one lead over Sanders in post-debate poll

Former Vice President Joe BidenJoe BidenThe Hill's Morning Report - Sponsored by AdvaMed - House panel expected to approve impeachment articles Thursday Democrats seek leverage for trial Democrats spend big to put Senate in play MORE has a 2-to-1 lead nationally over the next closest Democratic presidential contender after the second round of debates, according to the latest Harvard CAPS/Harris Poll.

The new survey finds Biden with 34 percent support among Democrats, followed by Sen. Bernie SandersBernie SandersThe Hill's Morning Report - Sponsored by AdvaMed - House panel expected to approve impeachment articles Thursday Warren, Buttigieg duke it out in sprint to 2020 The Memo: Pelosi-Trump trade deal provokes debate on left MORE (I-Vt.) at 17 percent.

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Sen. Kamala HarrisKamala Devi HarrisThe Hill's Morning Report - Sponsored by AdvaMed - House panel expected to approve impeachment articles Thursday Julián Castro jabs ICE: 'Delete your account' Pelosi endorses Christy Smith in bid to replace Katie Hill MORE (D-Calif.) is in third place with 9 percent support, followed by Sen. Elizabeth WarrenElizabeth Ann WarrenThe Hill's Morning Report - Sponsored by AdvaMed - House panel expected to approve impeachment articles Thursday Warren, Buttigieg duke it out in sprint to 2020 The Memo: Pelosi-Trump trade deal provokes debate on left MORE (D-Mass.) at 8 percent, South Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegThe Hill's Morning Report - Sponsored by AdvaMed - House panel expected to approve impeachment articles Thursday Warren, Buttigieg duke it out in sprint to 2020 Krystal Ball warns about lagging youth support for Buttigieg MORE at 4 percent, former Texas Rep. Beto O’Rourke at 3 percent and Sen. Cory BookerCory Anthony BookerThe Hill's Morning Report - Sponsored by AdvaMed - House panel expected to approve impeachment articles Thursday Julián Castro jabs ICE: 'Delete your account' Booker campaign unveils bilingual training program for Nevada caucus MORE (D-N.J.) at 2 percent.

“Biden has been steady despite some rocky performances at the debates,” said Mark PennMark PennPoll: 2020 general election remains wide open Poll: Biden holds his lead nationally Ex-Clinton strategist met with Trump to talk impeachment MORE, co-director of the Harvard CAPS/Harris Poll. “The Democratic voters are far more in sync with Biden’s views than any of the other candidates running. He maintains his front-runner status.”

The Harvard CAPS/Harris Poll of 585 registered Democratic voters was conducted between July 31 and Aug. 1. The first night of this week's Democratic debates took place on July 30 and the second night was July 31, so some of the respondents may not have viewed the second night of debate, when Biden appeared.

Biden’s lead is down some from the previous survey conducted in late May, before the Democratic debates. At the time, the poll showed Biden holding a 30-point lead over Sanders and registering 44 percent support among Democrats.

But the former vice president remains in a strong position, with 46 percent of Democrats viewing him as having the best chance to defeat President TrumpDonald John TrumpThe Hill's Morning Report - Sponsored by AdvaMed - House panel expected to approve impeachment articles Thursday Democrats worried by Jeremy Corbyn's UK rise amid anti-Semitism Warren, Buttigieg duke it out in sprint to 2020 MORE. Fifteen percent of Democrats said Sanders has the best shot at knocking off Trump, followed by Warren at 7 percent and Harris at 6 percent.

A plurality of Democrats, 47 percent, said they want to nominate a candidate with the strongest chance of winning. Only 12 percent said their first preference is a candidate who shares their positions, while 36 percent said they value both traits equally.

Biden also leads when voters are asked to name the top three candidates that best share their values, with 46 percent saying Biden, followed by Sanders at 34 percent, Warren at 27 and Harris at 24.

Health care is by far the top issue for Democratic voters, with 45 percent calling it their top priority, followed by immigration at 29 percent and jobs and the economy at 20 percent.

The Harvard CAPS/Harris 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.