Biden opens up double-digit lead over Sanders in early primary states: poll

Former Vice President Joe BidenJoe BidenPoll: Biden leads 2020 Democratic field by 15 points, followed by Sanders and Warren Booker takes swipe at Biden criminal justice reform plan Panel: Has Joe Biden been wrong on everything for 40 years? MORE leads Sen. Bernie SandersBernie SandersPoll: Biden leads 2020 Democratic field by 15 points, followed by Sanders and Warren Warren introduces bill to cancel student loan debt for millions Democrats, advocacy groups urge Pompeo to abolish new 'unalienable rights' commission 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 HarrisKamala Devi HarrisPoll: Biden leads 2020 Democratic field by 15 points, followed by Sanders and Warren Democrats, advocacy groups urge Pompeo to abolish new 'unalienable rights' commission Biden announces plan to counteract mass incarceration MORE (D-Calif.) is the choice of 8 percent of voters, and former Rep. Beto O’Rourke (D-Texas) and Sen. Elizabeth WarrenElizabeth Ann WarrenPoll: Biden leads 2020 Democratic field by 15 points, followed by Sanders and Warren Warren introduces bill to cancel student loan debt for millions Democrats, advocacy groups urge Pompeo to abolish new 'unalienable rights' commission 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 BookerCory Anthony BookerBooker takes swipe at Biden criminal justice reform plan Democrats, advocacy groups urge Pompeo to abolish new 'unalienable rights' commission Biden announces plan to counteract mass incarceration MORE (D-N.J.) was favored by 4 percent of voters, while Sen. Amy KlobucharAmy Jean KlobucharDemocrats, advocacy groups urge Pompeo to abolish new 'unalienable rights' commission Equifax breach settlement sparks criticism The Hill's 12:30 Report: Trump targets Mueller ahead of testimony MORE (D-Minn.) and South Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegPoll: Biden leads 2020 Democratic field by 15 points, followed by Sanders and Warren Biden announces plan to counteract mass incarceration Nashville radio host blocked by employer from airing his interview with Buttigieg MORE (D) both came in at 2 percent. Sen. Kirsten GillibrandKirsten Elizabeth GillibrandDemocrats, advocacy groups urge Pompeo to abolish new 'unalienable rights' commission Harris, Nadler introduce bill to decriminalize marijuana Gillibrand says she doesn't regret calling for Franken to resign 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.