Republican Scott Brown of Massachusetts is in a dead heat to retain his Senate seat against Democratic challenger Elizabeth Warren, according to a new poll from the University of Massachusetts Lowell and the Boston Herald. The poll found 49 percent support Brown and 48 percent support Warren. The Herald reports that Brown's 4-point lead in its mid-September poll has diminished "as more Democratic voters have moved to [Warren's] side."

Most recent polls have shown a significant Warren lead, and the Real Clear Politics average gives the Democrat a 4.4-point lead over Brown. On the other hand, a poll released last week by the Boston Globe showed a 2-point lead for Brown.

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