Former Vice President Joe Biden Joe BidenPelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Hillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Fox News poll: Biden ahead of Trump in Nevada, Pennsylvania and Ohio MORE holds a 7-point lead over a crowded field of Democratic presidential candidates in a new poll.

The Emerson poll found that 34 percent of Democratic primary voters surveyed support Biden, who is trailed by Sen. Bernie Sanders Bernie SandersThe Hill's Campaign Report: Trump faces backlash after not committing to peaceful transition of power Bernie Sanders: 'This is an election between Donald Trump and democracy' The Hill's 12:30 Report: Trump stokes fears over November election outcome MORE (I-Vt.) at 27 percent. Sen. Elizabeth Warren Elizabeth WarrenHillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns On The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline Democratic senators ask inspector general to investigate IRS use of location tracking service MORE (D-Mass.) had 14 percent support, followed by Sen. Kamala Harris Kamala HarrisHundreds of lawyers from nation's oldest African American sorority join effort to fight voter suppression Biden picks up endorsement from progressive climate group 350 Action 3 reasons why Biden is misreading the politics of court packing MORE (D-Calif.) with 7 percent, South Bend, Ind., Mayor Pete Buttigieg Pete ButtigiegBillionaire who donated to Trump in 2016 donates to Biden The Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November Buttigieg stands in as Pence for Harris's debate practice MORE (D) with 6 percent and Sen. Cory Booker Cory Anthony Booker3 reasons why Biden is misreading the politics of court packing Bipartisan praise pours in after Ginsburg's death DHS opens probe into allegations at Georgia ICE facility MORE (D-N.J.) with 3 percent.

The other candidates polled at 1 percent or lower. A majority of respondents — 56 percent — said they might change their vote, and 85 percent said they planned to watch the upcoming Democratic debates.

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“Similar to our other polls, Biden and Sanders voters are the most loyal with 50% to 55% saying they are set on their candidates," said Emerson Poll Director Spencer Kimball in a statement.

"Comparatively, 33% of Warren, 18% of Harris and 17% of Buttigieg voters say they will stick with their current choices, this suggests that about 30% of the Democratic electorate are spoken for and another 30% leaning toward the top two candidates as of now leaves a narrow lane for another candidate to grab a plurality of the vote,” Kimball added.

Researchers collected data between June 21 and 24 and the responses of Democratic primary voters have a 4.5 percentage point margin of error.

More than two dozen people are vying for the 2020 Democratic presidential nomination. Twenty of them will participate in the first Democratic debates this week.