July 6, 2012
Republican candidates for the U.S. Senate, John Brunner, left, Sarah Steelman, center, and Todd Akin are introduced at the start of a debate at Washington University in St. Louis, Friday, July 6, 2012. The candidates are competing to challenge Sen. Claire McCaskill, D-Mo., in the fall election.
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Missouri businessman John Brunner enthusiastically endorsed Mitt Romney for president Friday night, but his two rival GOP Senate candidates appeared more hesitant to do so as they clashed during the first — and perhaps last — televised debate before the August primary election.