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First Thoughts: McCaskill to get her challenger

<p>McCaskill to find out her GOP challenger in today’s Missouri SEN primary… Another look at the battle for Senate control… Romney camp comes out

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.
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.AP

Domenico Montanaro