Democrat Elizabeth Warren has defeated Republican Sen. Scott Brown in Massachusetts.
- With 32 percent of precincts reporting, Warren held a 52 percent to 48 percent lead over Brown.
- Brown first won election in a January 2010 special to replace the late Sen. Ted Kennedy. Warren, the architect of President Obama's Consumer Financial Protection Bureau, left the administration to challenge Brown after Senate Republicans made clear she would not be confirmed to head the agency.
- Brown is the first Senate Republican incumbent to lose his re-election bid this year.
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