Bit late to this, but here is Andrew Steele considering the state of modern political discourse.

The left and right appear not just deadlocked intellectually but actively ignorant of what motivates their opponents. In a world where the Internet, talk radio and micromarketing allow us to restrict our exposure to those with whom we share opinions, it is increasingly incumbent upon us to seek out other points of view and challenge our own assumptions.

Or, we can just resort to calling our political competitors crazy.