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Defying Odds, Republican Brown Becomes Next Senator from Massachusetts

In an outcome that would have been unthinkable just weeks ago, Republican Scott Brown has become the Senator-elect from Massachusetts.

The margin is currently 52-47. It is more likely than not to tighten slightly as much of the outstanding vote is in Boston, but all networks have called the race and Martha Coakley has conceded.

As one would naturally expect from an election in which the Republican won Massachusetts, Brown outperformed typical GOP margins in every corner of the state. But the swing tended to be largest in red-leaning and swing areas in central Massachusetts. Coakley’s numbers were relatively good in Western Massachusetts and a handful of left-leaning suburbs, but underwhelming in Boston itself.

Nate Silver is the founder and editor in chief of FiveThirtyEight.