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UNITED STATES - AUGUST 11:  Businessman Herman Cain arrives to Stephens Auditorium at Iowa State University for the Republican presidential debate in Ames, Iowa.  The debate will feature eight republican candidates including Cain.   (Photo By Tom Williams/Roll Call)

UNITED STATES - AUGUST 11: Businessman Herman Cain arrives to Stephens Auditorium at Iowa State University for the Republican presidential debate in Ames, Iowa. The debate will feature eight republican candidates including Cain. (Photo By Tom Williams/Roll Call)

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