The Martha McSally who ran for Congress in 2012 would not recognize herself today. Then, she was a retired Air Force Colonel mounting two unsuccessful House bids in Arizona, running as a post-partisan leader who would take the lead on immigration and deficit reduction. Then, she presented herself someone with “authenticity” who would not just repeat 15-second sound bites.
McSally won her seat in 2014 after promising to vote against her party more than 20 percent of the time but ins...