Politics, we’re often told, is governed by rules — basic principles that explain not just what’s going to happen, but what rational candidates and parties can be expected to do. …
Mr. Trump is not the first to test the basic assumptions about how politics works and how we predict outcomes. He may be changing the rules of the presidential primary race, but in the halls of Congress and in governors’ mansions across the country, politicians have already acted in ways that would have been unimaginable a decade ago. By testing and breaking the rules, they have been reshaping the practice of politics since long before Mr. Trump emerged. CONT.
Mark Schmitt (New America), New York Times