Poll: Biden leads in Iowa ahead of caucuses

Poll: Biden leads in Iowa ahead of caucuses
© Aaron Schwartz

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) holds a narrow lead in Iowa just days ahead of the state's caucuses, according to a poll released Sunday.

A USA Today/Suffolk University survey of likely caucusgoers found Biden in the lead with 25 percent of respondents indicating that they will support him, while 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.) and 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 (D) trailed at 19 percent and 18 percent in the poll, respectively.

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.), who has also battled among the top tier in Iowa, sat at 13 percent in the poll, the same percentage of likely caucusgoers who told pollsters that they were currently undecided.

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Another 45 percent remain uncommitted to their top choice, meaning that any of the top candidates could see significant gains or drops in their support levels before next week's caucuses.

No other candidates registered above 6 percent support in the poll, suggesting a clear divide between the top four candidates and the remainder of the Democratic field in the first-in-the-nation caucus state.

USA Today/Suffolk University's poll surveyed 500 likely caucusgoers by landline and cell phones between Jan. 23-26. The margin of error is 4.4 percentage points.