Poll: Sanders leads Biden by 9 points in Iowa

Poll: Sanders leads Biden by 9 points in Iowa
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Sen. Bernie SandersBernie SandersJoe Biden lost his fastball — can he get it back before South Carolina? Where the 2020 Democrats stand on taxes Bloomberg hits Sanders supporters in new ad MORE (I-Vt.) holds a commanding lead over the Democratic field in Iowa just days before the state is set to hold its first-in-the-nation caucuses, according to a new poll.

An Emerson College poll released Sunday evening of registered Democrats and left-leaning independents found Sanders in the lead with 30 percent of respondents planning to support him in the caucuses, while former Vice President Joe BidenJoe BidenJoe Biden lost his fastball — can he get it back before South Carolina? Where the 2020 Democrats stand on taxes Bloomberg hits Sanders supporters in new ad MORE (D) followed with 21 percent.

Sen. Elizabeth WarrenElizabeth Ann WarrenJoe Biden lost his fastball — can he get it back before South Carolina? Where the 2020 Democrats stand on taxes Budget hawks frustrated by 2020 politics in entitlement reform fight MORE (D-Mass.) has sunk to fourth place in the poll behind Sen. Amy KlobucharAmy Jean KlobucharJoe Biden lost his fastball — can he get it back before South Carolina? Where the 2020 Democrats stand on taxes Judd Gregg: Bloomberg rising MORE (D-Minn.) at 11 percent and 13 percent, respectively, while former South Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegJoe Biden lost his fastball — can he get it back before South Carolina? Where the 2020 Democrats stand on taxes Bloomberg hits Sanders supporters in new ad MORE rounded out the top tier in fifth place with 10 percent.

No other candidate registered above 5 percent support in the poll. Sanders's dominance in the poll comes after a USA Today/Suffolk University poll released earlier in the day showed Biden with a slight lead over Sanders in the state.

The Emerson College poll surveyed 450 Democrats and independents in Iowa via landlines and online polling, and has a margin of error of 4.6 percentage points.