A new poll released exclusively to The Hill showed that Joe Biden is still leading the pack of 2020 Democratic presidential hopefuls. Despite showing a dip in his numbers, the former vice president still holds a double-digit lead over his closest opponent, Sen. Elizabeth Warren.

The Massachusetts senator saw an increase in her numbers with Black voters, as they more than double from 6% in August to 13% at the end of September. Sen. Bernie Sanders remained in third place behind the top two contenders.

“We confirm that Biden is holding on, but Warren is surging as she develops a national following within the primary electorate,” Mark Penn, the co-director of the Harvard CAPS/Harris Poll, said. “The Sanders campaign could be in real trouble if they do not stem the tide soon.”

Sen. Kamala Harris received 6% support in the poll, finishing in fourth place, while three other candidates, South Bend, Ind., Mayor Pete Buttigieg, former Rep. Beto O’Rourke and entrepreneur Andrew Yang, tied for fifth place with 3% each.

The release of the poll comes after multiple polls showed Warren leading Biden both in Iowa, the first state to vote in the primary process, and nationwide. A Des Moines Register/CNN poll released last weekend showed her at 22% support, edging out Biden's 20%, and a Monmouth University poll found her leading Biden in New Hampshire, 27% to 25%. A Quinnipiac poll showed the same nationwide numbers as the Monmouth poll.

According to The Hill, the full poll results will be posted online later this week. The Harvard CAPS/Harris Poll survey surveyed 693 registered Democratic voters from Sept. 22-24 and was weighted to reflect known demographics. As a representative online sample, it does not report a probability confidence interval.