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Warren holds slim lead over Sanders in Iowa, Biden in fourth: poll

A new poll shows a tight race in Iowa, with Sen. Elizabeth WarrenElizabeth WarrenTim Ryan says he's 'looking seriously' at running for Portman's Senate seat Leahy, not Roberts, to preside over impeachment trial Skepticism reigns as Biden, McConnell begin new era MORE (D-Mass.) leading the early voting state and former Vice President Joe BidenJoe BidenBudowsky: A Biden-McConnell state of emergency summit DC might win US House vote if it tries Inaugural poet Amanda Gorman inks deal with IMG Models MORE slipping to fourth.

The New York Times–Siena College poll released Friday showed Warren with 22 percent support from likely Democratic caucusgoers, Sen. Bernie SandersBernie SandersTim Ryan says he's 'looking seriously' at running for Portman's Senate seat Bernie Sanders has been most-followed member of Congress on social media for six years This week: Senate stuck in limbo MORE (I-Vt.) with 19 percent, South Bend, Ind., Mayor Pete ButtigiegPete ButtigiegExclusive 'Lucky' excerpt: Vow of Black woman on Supreme Court was Biden turning point The Hill's Morning Report - Biden's crisis agenda hits headwinds Biden signs order to require masks on planes and public transportation MORE (D) with 18 percent and Biden with 17 percent. All four fall close to the poll's margin of error of plus or minus 4.7 percentage points.

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No other candidate was near the top four, who were distantly trailed by Sen. Amy KlobucharAmy KlobucharSenators spar over validity of Trump impeachment trial Sunday shows - Biden agenda, Trump impeachment trial dominate Klobuchar says Senate impeachment trial of former official is constitutional: 'We have precedent' MORE (D-Minn.) with 4 percent, Sen. Kamala HarrisKamala HarrisInaugural poet Amanda Gorman inks deal with IMG Models Overnight Defense: Biden lifts Trump's transgender military ban | Democrats, advocates celebrate end of ban | 5,000 guardsmen staying in DC through mid-March The Hill's 12:30 Report - Presented by Facebook - GOP senator retires MORE (D-Calif.) with 3 percent and entrepreneur Andrew YangAndrew YangYang to quarantine after campaign staffer tests positive for COVID-19 Andrew Yang sparks Twitter uproar with pro-bodega video Yang announces run for New York City mayor MORE with 3 percent.

The survey is among a series of recent polls showing Warren leading the field in Iowa. A RealClearPolitics average of polls showed the senator ahead of the former vice president by an average of 5 percentage points Friday morning. 

Buttigieg's rise in the poll puts him much closer to the front-runners in Iowa than in national polls. He is in fourth place in the nationwide RealClearPolitics average of polls, trailing Sanders by 9 points.

Biden said in an MSNBC interview this week that he plans to do “very well” in Iowa and New Hampshire amid questions as to whether he can win the early caucus and primary states. 

“I plan on doing very well in both those," he said Tuesday. "I’ve been ahead in Iowa. I’ve been ahead in South Carolina. I’m ahead in all the national polls with the occasional one that pops up that’s different."

Researchers surveyed 439 likely Iowa Democratic caucusgoers from Oct. 25 to 30.

The Iowa caucuses are just more than three months away, taking place on Feb. 3.

More than a dozen people are vying for the 2020 Democratic presidential nomination.

Updated at 9:08 a.m.