Former Vice President Joe Biden Joe BidenOmar fires back at Trump over rally remarks: 'This is my country' Trump mocks Biden appearance, mask use ahead of first debate Trump attacks Omar for criticizing US: 'How did you do where you came from?' MORE leads Sen. Bernie Sanders Bernie SandersButtigieg stands in as Pence for Harris's debate practice Bernie Sanders warns of 'nightmare scenario' if Trump refuses election results Harris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda MORE (I-Vt.) by 11 points in a new poll of early primary and caucus states ahead of the 2020 presidential race.

Biden leads the announced Democratic primary field with 38 percent, according to the Morning Consult survey, followed by Sanders at 27 percent. Sen. Kamala Harris Kamala HarrisButtigieg stands in as Pence for Harris's debate practice First presidential debate to cover coronavirus, Supreme Court Harris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda MORE (D-Calif.) is the choice of 8 percent of voters, and former Rep. Beto O’Rourke (D-Texas) and Sen. Elizabeth Warren Elizabeth WarrenHarris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda Judd Gregg: The Kamala threat — the Californiaization of America GOP set to release controversial Biden report MORE (D-Mass.) tied for fourth place, with 7 percent each.

The gap between Biden, who has yet to enter the race, and Sanders narrows slightly among primary voters nationwide, pollsters found.

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Biden has 35 percent support, followed by Sanders at 25 percent. Harris and O’Rourke (D-Texas) are tied in third place nationwide, with 8 percent each, with Warren rounding out the top five, with 7 percent.

Sen. Cory Booker Cory Anthony BookerBipartisan praise pours in after Ginsburg's death DHS opens probe into allegations at Georgia ICE facility Democratic lawmakers call for an investigation into allegations of medical neglect at Georgia ICE facility MORE (D-N.J.) was favored by 4 percent of voters, while Sen. Amy Klobuchar Amy KlobucharSocial media platforms put muscle into National Voter Registration Day Battle lines drawn on precedent in Supreme Court fight Sunday shows - Ruth Bader Ginsburg's death dominates MORE (D-Minn.) and South Bend, Ind., Mayor Pete Buttigieg Pete ButtigiegButtigieg stands in as Pence for Harris's debate practice Hillicon Valley: FBI, DHS warn that foreign hackers will likely spread disinformation around election results | Social media platforms put muscle into National Voter Registration Day | Trump to meet with Republican state officials on tech liability shield Facebook takes down Chinese network targeting Philippines, Southeast Asia and the US MORE (D) both came in at 2 percent. Sen. Kirsten Gillibrand Kirsten GillibrandSunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Suburban moms are going to decide the 2020 election Jon Stewart urges Congress to help veterans exposed to burn pits MORE (D-N.Y.) polled at 1 percent.

The survey also found Sanders was the most popular second choice among Biden supporters, and vice versa. Thirty-three percent of Biden supporters listed Sanders as their second choice, while 35 percent of Sanders supporters named Biden.

The poll of 13,725 registered voters nationwide, conducted March 18–24, has a margin of error of 1 percentage point. The margin of error rises to 4 percentage points among voters living in Iowa, New Hampshire, South Carolina and Nevada.

-- Updated at 11:59 a.m.