Poll: Biden leads 2020 Democratic pack by 15 points, Warren, Harris, Sanders tie for second

Former Vice President Joe Biden holds a commanding lead over his Democratic presidential opponents, according to a new poll.

A new survey from Emerson Polling found that Biden had the support of 30 percent of respondents, beating out Sens. Kamala Harris (D-Calif.), Elizabeth Warren (D-Mass.) and Bernie Sanders (I-Vt.) who all tied for second place with support from 15 percent of those polled. 

Since the last poll released in June, overall support for Biden had dropped from 34 percent, but he extended his lead over Sanders, whose support fell from 27 percent last month.{mosads}

South Bend, Ind., Mayor Pete Buttigieg (D) trailed the top four with support from just 5 percent of respondents. 

Spencer Kimball, director of Emerson Polling, said in a statement that “these numbers suggest that the Democratic field is still fluid and that Biden will need to improve upon his performance to maintain his lead.”

A majority, 60 percent of respondents, said they are not completely set on the candidate they chose, while 41 percent said they will definitely vote for their choice. 

Researchers surveyed, between July 6 and 8, 481 registered Democratic voters who said they plan to vote in the Democratic primary or caucus in 2020. The survey has a margin of error of plus or minus 4.4 percentage points.