Warren, Harris surge into tie with Biden in new Iowa poll

Sens. Elizabeth WarrenElizabeth Ann WarrenKlobuchar plans campaign rallies across Iowa despite impeachment trial Hillicon Valley — Presented by Philip Morris International — Wyden asks NSA to investigate White House cybersecurity | Commerce withdraws Huawei rule after Pentagon objects | Warren calls on Brazil to drop Greenwald charges Warren pledges to release Trump records if elected MORE (D-Mass.) and Kamala HarrisKamala Devi HarrisHarris on 2020 endorsement: 'I am not thinking about it right now' Panel: Is Kamala Harris a hypocrite for mulling a Joe Biden endorsement? The Hill's Morning Report — Dems detail case to remove Trump for abuse of power MORE (D-Calif.) have surged into a virtual tie with former Vice President Joe BidenJoe BidenSchiff closes Democrats' impeachment arguments with emotional appeal to remove Trump Conservative reporter on Sanders: He's not a 'yes man' Democrats feel political momentum swinging to them on impeachment MORE in Iowa after last week’s debates, according to a new survey conducted for a Democratic group. 

The poll, conducted by Democratic pollster David Binder for the group Focus on Rural America, shows Warren leading the field with 20 percent of the vote, a statistical tie with Harris at 18 percent and Biden at 17 percent.

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Sen. Bernie SandersBernie SandersSanders to Clinton: 'This is not the kind of rhetoric that we need' Conservative reporter on Sanders: He's not a 'yes man' Human Rights Campaign president rips Sanders's embrace of Rogan endorsement MORE (I-Vt.) is just off the podium at 12 percent, closely trailed by South Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegPoll: 68 percent of Democrats say it 'makes no difference' if a candidate is a billionaire CNN to host two straight nights of Democratic town halls before NH primary Poll shows tight general election battle between Trump and top Democrats MORE at 10 percent. Sen. Amy KlobucharAmy Jean KlobucharKlobuchar plans campaign rallies across Iowa despite impeachment trial Impeachment throws curveball in Iowa to sidelined senators Sanders says it's 'disappointing' he's not on campaign trail in Iowa MORE (D-Minn.) clocks in at 4 percent, and Sen. Cory BookerCory Anthony BookerBlack caucus in Nevada: 'Notion that Biden has all of black vote is not true' The Hill's 12:30 Report: House managers to begin opening arguments on day two Patrick backs reparations in unveiling 'Equity Agenda for Black Americans' MORE (D-N.J.) scores 2 percent. Ten other candidates each notch 1 percent support in the Hawkeye State.

The poll shows Warren and Harris both doubling their support following strong performances in last week’s debate, while Biden and Sanders have slipped. In the group’s March poll, Biden led the field with 25 percent support, followed by Sanders at 17 percent.  

Klobuchar, Booker and former Rep. Beto O’Rourke (D-Texas) all saw their poll numbers slip. O’Rourke’s support slipped from 6 percent in the March poll to just 1 percent in the July survey, conducted entirely after the debates.

The debates certainly helped Harris and Warren: Voters who watched some or all of the two-night coverage said they were most likely to back one of the two senators, both of whom stood out onstage against their rivals.  

Harris has been steadily rising since she announced she would run in January.

Today, 82 percent of Iowa Democrats surveyed say they have a positive opinion about the California senator, up from 54 percent in a December poll and 73 percent in March. Warren is the most popular Democrat in the field, with 88 percent of respondents saying they have a positive opinion about the Massachusetts Democrat. 

Buttigieg’s image has also improved markedly, growing from a 44 percent positive image to an 80 percent positive image from March to July. 

On the other hand, Biden and Sanders have both seen opinions about them slide.

About three-quarters of Iowa Democrats polled, 74 percent, see Biden positively, down from 90 percent in December and 88 percent in March; Sanders’s positive image slipped from 83 percent in March to 73 percent in July.

Fewer than 1 in 3 Iowa Democrats see eight of the lesser-known contenders in a positive light: Businessman Andrew YangAndrew YangJohn Leguizamo joins the 'Yang Gang' CNN to host two straight nights of Democratic town halls before NH primary Joe Rogan says he's probably voting for Bernie Sanders MORE, Reps. Eric SwalwellEric Michael SwalwellMartha McSally fundraises off 'liberal hack' remark to CNN reporter Enes Kanter sees political stardom — after NBA and WWE Swalwell pens op-ed comparing Trump impeachment to XYZ Affair MORE (D-Calif.), Tim RyanTimothy (Tim) RyanOffice of Technology Assessment: It's time for a second coming Key moments in the 2020 Democratic presidential race so far GM among partners planning .3B battery plant in Ohio MORE (D-Ohio) and Seth MoultonSeth MoultonOvernight Defense: Iran crisis eases as Trump says Tehran 'standing down' | Dems unconvinced on evidence behind Soleimani strike | House sets Thursday vote on Iran war powers Congress reacts to US assassination of Iranian general Key moments in the 2020 Democratic presidential race so far MORE (D-Mass.), 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), Sen. Michael BennetMichael Farrand BennetImpeachment throws curveball in Iowa to sidelined senators Sanders says it's 'disappointing' he's not on campaign trail in Iowa CNN to host two straight nights of Democratic town halls before NH primary MORE (D-Colo.), author Marianne WilliamsonMarianne WilliamsonMarianne Williamson says she supports Yang in Iowa caucuses Patrick backs reparations in unveiling 'Equity Agenda for Black Americans' Marianne Williamson drops out of 2020 race MORE and Wayne MessamWayne Martin MessamKey moments in the 2020 Democratic presidential race so far Wayne Messam suspends Democratic presidential campaign 2020 primary debate guide: Everything you need to know ahead of the November forum MORE, the mayor of Miramar, Fla.

The survey of 600 likely Iowa Democratic caucusgoers was conducted June 29-July 1, over both landline and cellphones, carrying a margin of error of 4 percentage points.