Republican candidate for U.S. Senate Charlie Summers speaks at a campaign stop at a Gritty McDuff's pub, Thursday, Oct. 4, 2012, in Portland, Maine. (AP Photo/Robert F. Bukaty)

Associated Press
Republican candidate for U.S. Senate Charlie Summers speaks at a campaign stop at a Gritty McDuff's pub, Thursday, Oct. 4, 2012, in Portland, Maine. (AP Photo/Robert F. Bukaty)
Republican candidate for U.S. Senate Charlie Summers speaks at a campaign stop at a Gritty McDuff's pub, Thursday, Oct. 4, 2012, in Portland, Maine. (AP Photo/Robert F. Bukaty)
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