http://www.slate.com/articles/news_and_politics/politics/2015/08/donald_trump_s_lasting_impression_how_the_gop_candidate_can_make_a_difference.html

By now it is fairly clear that Donald Trump can get away with expressing views that would sink almost any other GOP candidate. While the other Republican presidential contenders had readied themselves for several rounds of more-conservative-than-thou—the usual contest in the GOP primary—Trump has blithely abandoned any number of conservative orthodoxies, and he doesn’t appear to have lost any supporters in the process. Indeed, he may well have gained a few. This week, pollster Frank Luntz conducted a focus group of current and former Trump supporters. For over two and a half hours, Luntz probed their reactions to Trump’s past support for abortion rights and stricter gun laws, among other heresies, and he found that none of them seemed to care.