Metro

Warren, Brown neck and neck in new poll

Another poll on the Massachusetts Senate race, released this afternoon, puts Senator Scott brown and Democratic challenger Elizabeth Warren in a dead heat, with Warren holding a 40-38 lead.

The MassPulse Quarterly Poll of 500 residents aged 18 or older, conducted by The MassINC Polling Group, was the rare poll done in the depths of summer, between July 19 through July 22.

But it reaffirms what several other recent polls have shown, that the tightly fought race, with control of the US Senate at stake, is essentially tied. Warren’s two-point lead is well within the poll’s margin of error of plus or minus 4.4 percent.

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The group’s April poll showed Warren leading Brown 43 percent to 41 percent.

Noah Bierman can be reached at nbierman@globe.com. Follow him on Twitter@noahbierman.