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Sanders leads in Iowa ahead of caucus: poll

Sen. Bernie SandersBernie SandersMusk's SpaceX has a competitive advantage over Bezos' Blue Origin New York, New Jersey, California face long odds in scrapping SALT  Warren calls for US to support ceasefire between Israel and Hamas MORE (I-Vt.) remains the top choice for Iowa Democrats a day before voters head to caucuses across the state, according to a new poll.

An Emerson College poll released Sunday night found Sanders leading the field with the support of 28 percent of respondents, while former Vice President Joe BidenJoe Biden28 Senate Democrats sign statement urging Israel-Hamas ceasefire Franklin Graham says Trump comeback would 'be a very tough thing to do' Schools face new pressures to reopen for in-person learning MORE remained in second place with 21 percent, unchanged from the same poll a week ago.

Sanders saw his support dip slightly from 30 percent in last week's poll. Sen. Elizabeth WarrenElizabeth WarrenLawmakers bicker over how to go after tax cheats Warren calls for US to support ceasefire between Israel and Hamas Sanders: Netanyahu has cultivated 'racist nationalism' MORE (D-Mass.) has gained 3 percentage points since the previous survey. She remains in fourth place in Saturday's poll after previously falling behind Sen. Amy KlobucharAmy Klobuchar Klobuchar offers tribute to her father, who died Wednesday The Hill's Morning Report - Presented by Facebook - Cheney poised to be ousted; Biden to host big meeting Senate panel deadlocks in vote on sweeping elections bill MORE (D-Minn.) last week.

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Klobuchar, meanwhile, saw her support drop 2 points over the week, while former South Bend, Ind., Mayor Pete ButtigiegPete ButtigiegInfrastructure deal imperiled by differences on financing Biden says he and GOP both 'sincere about' seeking infrastructure compromise The Hill's 12:30 Report - Presented by Facebook - Colonial pays hackers as service is restored MORE (D) surged 5 points to take third place in the poll.

Businessman Andrew YangAndrew YangJeffries endorses Wiley in New York mayor's race Yang: 'Defund the police is the wrong approach for New York City' HuffPost's Daniel Marans discusses fallout from Yang's comments on Israel MORE and billionaire Tom SteyerTom SteyerTop 12 political donors accounted for almost 1 of every 13 dollars raised since 2009: study California Democrats weigh their recall options Why we should be leery of companies entering political fray MORE registered support from 5 percent and 4 percent of voters, respectively, while no other candidates polled higher than 1 percent.

The survey was taken between Jan. 30 and Feb. 2 and polled 853 likely Democratic caucusgoers in the state. The margin of error is 3.3 percentage points.