At the root of America's broken politics is hyperbolic partisanship. It distorts perceptions, inflames disagreements, and poisons the democratic process. Citizens pine for a time when liberals and conservatives compromised with one another--or they yearn for a post-partisan future when the common good trumps ideology and self-interest. Russell Muirhead argues that better partisanship, not less partisanship, is the solution to America's political...