A new survey found that Joe Biden and Elizabeth Warren are in a dead heat for the Democratic presidential nomination.

The Massachusetts senator trailed Biden by just one point in the Economist-YouGov poll conducted from Aug. 10-13. Biden brought in 21% nationally compared to Warren who garnered 20% support, with a 2.6% margin of error.

Vermont Sen. Bernie Sanders came in third, clocking in at 16% support among voters. No other candidate polled in the double digits, with Sen. Kamala Harris of California registering 8%. New Jersey Sen. Cory Booker and South Bend, Indiana, Mayor Pete Buttigieg both received 5% support in the poll.

Other candidates have seen a bit of rise since the last round of Democratic debates and recent gaffes by Biden. A poll released Tuesday found that in the key primary state of New Hampshire, Sanders leads the 76-year-old former vice president 21% to 15%.

Despite the new survey, Biden still commands a substantial lead in the RealClearPolitics national average of polls. He is registering 30.3% support with Warren coming in second at 18.5%, and Sanders rounding out the pack at 17.5% support.