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STORY: Scott Brown, a Republican who stunned Massachusetts Democrats in 2010 when he won the U.S. Senate seat that Edward Kennedy had held for half a century, is looking for another upset on Tuesday as he takes on Senator Jeanne Shaheen of New Hampshire.
Polls show a dead heat between Shaheen, a first-term senator and former governor, and Brown, who had been a little-known state legislator before his surprise 2010 victory.
Turnout was unusually high for a midterm election, officials said, with Secretary of State Bill Gardner estimating it could top 50 percent, which would be a record for a non-presidential year.
Brown lost his first re-election bid to Elizabeth Warren in 2012 and moved to New Hampshire early this year. He has sought to tie Shaheen closely to President Barack Obama, who is unpopular in this state, while Shaheen has depicted her rival as out of touch on women's issues.
Polls have shown Brown, 55, closing in
