Olympia Snowe made her case for a return to governing from the “sensible center,” and she did it with conviction. But while the audience was both loud and supportive at a women’s summit in Charlotte, no one – and that includes the former Republican U.S. senator from Maine — thought it would be easy. Snowe was considered moderate in her approach and her politics when she decided not to run for a fourth term in the Senate in 2012. How bad had it gotten? Republicans and Democrats honored her at separate celebrations, a departure from the past. “It’s not even...