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

Former Vice President Joe BidenJoe BidenDemocrats worry they don't have right candidate to beat Trump Trump threatening to fire Mulvaney: report Giuliani pens op-ed slamming 'unprecedented' impeachment inquiry MORE leads Sen. Bernie SandersBernie SandersDemocrats worry they don't have right candidate to beat Trump Overnight Health Care: Top health official defends contract payments to Trump allies | Vaping advocates confident Trump will turn from flavor ban | Sanders gets endorsement from nurses union Krystal Ball credits Gabbard's upswing in 2020 race to 'feckless' Democratic establishment 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 HarrisOutsider candidates outpoll insider candidates Poll: Buttigieg leads Democratic field in Iowa Press: Another billionaire need not apply MORE (D-Calif.) is the choice of 8 percent of voters, and former Rep. Beto O’Rourke (D-Texas) and Sen. Elizabeth WarrenElizabeth Ann WarrenDemocrats worry they don't have right candidate to beat Trump Overnight Energy: BLM staff face choice of relocation or resignation as agency moves | Trump says he's 'very much into climate' | EPA rule would expand limits on scientific studies Krystal Ball credits Gabbard's upswing in 2020 race to 'feckless' Democratic establishment 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 BookerOutsider candidates outpoll insider candidates The Hill's Campaign Report: Bloomberg looks to upend Democratic race Poll: Biden support hits record low of 26 percent MORE (D-N.J.) was favored by 4 percent of voters, while Sen. Amy KlobucharAmy Jean KlobucharGoogle sparks new privacy fears over health care data Krystal Ball credits Gabbard's upswing in 2020 race to 'feckless' Democratic establishment Outsider candidates outpoll insider candidates MORE (D-Minn.) and South Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegDemocrats worry they don't have right candidate to beat Trump Saagar Enjeti rips Buttigieg for praising Obama after misquote Krystal Ball credits Gabbard's upswing in 2020 race to 'feckless' Democratic establishment MORE (D) both came in at 2 percent. Sen. Kirsten GillibrandKirsten GillibrandSenate panel clears controversial Trump court pick Advocates step up efforts for horse racing reform bill after more deaths Harris proposes keeping schools open for 10 hours a day 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.