Republicans: Political purges may work in totalitarian states, but in a democracy they can be self-defeating. The senator who called the Tea Party "wacko birds" should realize the GOP's real enemies are called Democrats. It's been said that all politics is local, and normally a state party's internal squabbles would not be national news. But when they involve a former presidential candidate on an issue that will affect the selection of the GOP's 2016 presidential nominee and chances, we sit up and take notice. Sen. John McCain, R-Ariz., who lost the 2008 election to Barack Obama and who is running...