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 SandersBloomberg campaign: Primary is two-way race with Sanders Warren: Bloomberg making debate will show how other candidates handle 'an egomaniac billionaire' HuffPost reporter: Sanders could win plurality of delegates but lose nomination 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 BidenBloomberg campaign: Primary is two-way race with Sanders HuffPost reporter: Sanders could win plurality of delegates but lose nomination Meghan McCain to Joy Behar: 'You guys have done a piss-poor job of convincing me that I should vote for a Democrat' MORE (D) followed with 21 percent.

Sen. Elizabeth WarrenElizabeth Ann WarrenWarren: Bloomberg making debate will show how other candidates handle 'an egomaniac billionaire' Klobuchar campaign gets first super PAC HuffPost reporter: Sanders could win plurality of delegates but lose nomination MORE (D-Mass.) has sunk to fourth place in the poll behind Sen. Amy KlobucharAmy Jean KlobucharKlobuchar campaign gets first super PAC Sanders leads among Latino voters: poll How the media fall in and out of love with candidates MORE (D-Minn.) at 11 percent and 13 percent, respectively, while former South Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegHuffPost reporter: Sanders could win plurality of delegates but lose nomination Sanders campaign expands operations in Michigan Sanders leads among Latino voters: poll 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.