Former Republican Rep. Tom Davis told The Hill newspaper: “The middle is getting squeezed,” but his comment vastly understates the crisis in the capital. Activists in both parties have declared war on moderates. The ideological gap between the two parties is widening rapidly. Paralysis is pervasive. Political scientist Keith Poole of the University of Georgia, who studies voting patterns, told the National Journal: “We are clearly as conflicted as we’ve been since 1905. The parties are, I think, completely dysfunctional and incapable of acting on major policy.” The National Journal reports that as recently as 1999, more than half of...