Biden, Sanders top poll of possible Democratic presidential hopefuls

Former Vice President Joe BidenJoe BidenWarren: Dershowitz presentation 'nonsensical,' 'could not follow it' Bolton told Barr he was concerned Trump did favors for autocrats: report Dershowitz: Bolton allegations would not constitute impeachable offense MORE and Sen. Bernie SandersBernie SandersGOP Iowa senator suggests Trump impeachment defense could hurt Biden at caucuses On The Money: Stocks close with steep losses driven by coronavirus fears | Tax season could bring more refund confusion | Trump's new wins for farmers may not undo trade damage Sanders launches first TV ads in Nevada MORE (I-Vt.) are the most popular potential 2020 Democratic presidential candidates, according to a new American Barometer poll. 

The poll, which is a joint project of Hill.TV and the HarrisX polling company, showed Biden with a 50 percent favorable rating, while Sanders trailed with a 48 percent favorable rating. 

Only 31 percent of those polled said they viewed the former vice president unfavorably. A third of respondents said they viewed Sanders unfavorably. 

The survey comes as speculation swirls around a slew of potential Democratic contenders, including Sens. Kirsten GillibrandKirsten GillibrandGOP-Biden feud looms over impeachment trial Sanders defends vote against USMCA: 'Not a single damn mention' of climate change The Hill's Morning Report — President Trump on trial MORE (N.Y.), Kamala HarrisKamala Devi HarrisBiden leads 2020 pack in congressional endorsements Harris on 2020 endorsement: 'I am not thinking about it right now' Panel: Is Kamala Harris a hypocrite for mulling a Joe Biden endorsement? MORE (Calif.), Elizabeth WarrenElizabeth Ann WarrenWarren: Dershowitz presentation 'nonsensical,' 'could not follow it' On The Money: Stocks close with steep losses driven by coronavirus fears | Tax season could bring more refund confusion | Trump's new wins for farmers may not undo trade damage Overnight Energy: Sanders scores highest on green group's voter guide | Trump's latest wins for farmers may not undo trade damage | Amazon employees defy company to speak on climate change MORE (Mass.) and Cory BookerCory Anthony BookerSenate Dems to Pompeo: Comments about NPR reporter 'insulting and contemptuous' Black 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 MORE (N.J.), who could challenge President TrumpDonald John TrumpWarren: Dershowitz presentation 'nonsensical,' 'could not follow it' Bolton told Barr he was concerned Trump did favors for autocrats: report Dershowitz: Bolton allegations would not constitute impeachable offense MORE in 2020. 

Warren held the highest favorable rating among Democratic senators listed in the survey, with 33 percent of those polled saying they held a favorable view of the senator.

The poll showed Gillibrand holding a 20 percent favorable rating, while 21 percent of respondents said they have a favorable view of Harris, and 23 percent said the same for Booker.  

Name recognition remains an obstacle for many Democratic contenders. 

Thirty-four percent of respondents said they had never heard of Gillibrand, while 36 percent said the same for Harris. Thirty-two percent of respondents had not heard of Booker.

Only 4 percent of those polled said they had never heard of Biden or Sanders. 

Democratic pollster Margie Omero urged caution when speculating about current 2020 polling. Omero said that much could change before the presidential election. 

"I remember lots of green room snickering over Bernie Sanders in September before the [2016 Democratic] primary," Omero told Hill.TV's Jamal Simmons on "What America's Thinking" Friday. “A lot can change. That doesn’t mean that Joe Biden doesn’t have an advantage."

“I think there are going to be a lot of Democrats who are going to feel torn because there are so many exciting candidates from which to choose," she continued. 

The survey was conducted July 21–22 among 1,001 registered voters. 

— Julia Manchester