Poll: Biden leads 2020 Democratic field by 8 points

A new poll shows former Vice President Joe BidenJoe BidenThe Hill's 12:30 Report: NY Times story sparks new firestorm over Kavanaugh Top Sanders adviser: 'He is a little bit angry' Working Families Party endorses Warren after backing Sanders in 2016 MORE leading the crowded 2020 Democratic presidential field by 8 points. 

The Economist/YouGov survey found that 26 percent of Democratic presidential primary or caucus voters said they would support Biden. He's trailed by Sen. Elizabeth WarrenElizabeth Ann WarrenThe Hill's 12:30 Report: NY Times story sparks new firestorm over Kavanaugh Working Families Party endorses Warren after backing Sanders in 2016 Warren proposes new restrictions, taxes on lobbying MORE (D-Mass.), who registered  support from 18 percent of respondents.

Sen. Bernie SandersBernie SandersChamber of Commerce argues against Democratic proposals for financial transaction taxes Top Sanders adviser: 'He is a little bit angry' Working Families Party endorses Warren after backing Sanders in 2016 MORE (I-Vt.) had the support of 13 percent of respondents while Sen. Kamala HarrisKamala Devi HarrisChamber of Commerce argues against Democratic proposals for financial transaction taxes Warren proposes new restrictions, taxes on lobbying Five top 2020 Democrats haven't committed to MSNBC climate forum MORE (D-Calif.) garnered the backing of 10 percent  and South Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegFive top 2020 Democrats haven't committed to MSNBC climate forum Abrams helps launch initiative to train women activists, organizers This is how Democrats will ensure Trump's re-election MORE attracted 5 percent. 

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Those five candidates are among more than two dozen in the race for the Democratic presidential nomination and 20 who have appeared or will appear on the Democratic debate stage this week in Detroit. They're also the only candidates in the new survey with at least 3 percent support. 

Researchers surveyed 1,500 adult citizens including 1,101 registered voters between July 27 and July 30. The overall margin of error was 2.6 percentage points. For registered voters, it was 3.1 points.

Biden has consistently been the front-runner in most major polls.