Behind Texas Gov. Rick Perry’s visit to Iowa this week to campaign for local politicians is a careful effort to remake his image from the 2012 Republican presidential candidate who couldn’t remember a key message during a debate, to a more polished and prepared contender. While he denies it is a dress rehearsal for a second presidential run, Perry is studying policy, traveling and meeting with key activists as he campaigns for Iowa Gov. Terry Branstad and U.S. Senate candidate Matt Whitaker in the state expected to host the first presidential caucus of 2016. …