Poll: Email controversy hurting Clinton with Mass. independents
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Democratic presidential front-runner Hillary ClintonHillary Diane Rodham ClintonUkrainian official denies Trump pressured president The Memo: 'Whistleblower' furor gains steam Missing piece to the Ukraine puzzle: State Department's overture to Rudy Giuliani MORE’s email controversy is costing her independent voters in Massachusetts, a new poll says.

Forty-seven percent of independents said her use of a private email account would make them less likely to vote for her, according to the latest Emerson College Polling Society survey. Only 24-percent of Democrats expressed such concerns.

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Overall, 38.7 percent of Bay State independents are less likely to vote for Clinton in the primary because of the controversy. Another 53.9 percent said that there is no change in how they will vote, while 7.4 percent said they’re more likely to back the former secretary of State.

Wednesday’s results are a troubling sign for Clinton’s campaign given the number of independent voters in Massachusetts. Approximately half of Massachusetts voters, 50.4 percent, are registered without Democratic or Republican affiliations, the Emerson College Polling Society said.

The poll also found a plurality of Massachusetts voters believe Clinton’s private email server hurt U.S. foreign policy, at 44.9 percent, with 36.9 percent saying it didn't and 18.2 percent unsure.

Clinton has weathered months of skepticism over her use of a private storage device during her tenure at the State Department.

Critics say that decision prevented accountability of her decisions and may have jeopardized sensitive national intelligence there.

Clinton is testifying Thursday before the House Select Committee on Benghazi. At issue is her role in the Sept. 11, 2012, terrorist attack in Benghazi, Libya, that killed four Americans.