U.S. Sen. John McCain, left, reacts to U.S. Rep. Denny Rehberg on Friday, Aug. 17, 2012, while campaigning for Rehberg in Great Falls, Mont. Rehberg is enlisting McCain's help as he attempts to woo ... more 
U.S. Sen. John McCain, left, reacts to U.S. Rep. Denny Rehberg on Friday, Aug. 17, 2012, while campaigning for Rehberg in Great Falls, Mont. Rehberg is enlisting McCain's help as he attempts to woo veterans in his race to unseat U.S. Sen. Jon Tester. (AP Photo/Matt Gouras) less 
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Associated Press | Photo By Matt Gouras
Sat, Aug 18, 2012 7:45 AM EDT