In this July 2, 2013 photo. U.S. Sen. Mike Enzi, R-Wyo., left, talks to constituent John Marquardt at a senior center in Pine Bluffs, Wyo. Enzi announced Tuesday, July 16, 2013, that he will run for ... more 
In this July 2, 2013 photo. U.S. Sen. Mike Enzi, R-Wyo., left, talks to constituent John Marquardt at a senior center in Pine Bluffs, Wyo. Enzi announced Tuesday, July 16, 2013, that he will run for re-election to the Senate. Liz Cheney, daughter of former Vice President Dick Cheney, said she will challenge him in the 2014 Republican primary. (AP Photo/Ben Neary) less 
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Associated Press | Photo By Ben Neary
Wed, Jul 17, 2013 12:07 AM EDT