Great piece by David Frum (a speechwriter in the George W. Bush administration) for New York Magazine. I’ve pulled a few quotes below, but it’s definitely worth reading the whole thing.

In the face of evidence of dwindling upward mobility and long-stagnating middle-class wages, my party’s economic ideas sometimes seem to have shrunk to just one: more tax cuts for the very highest earners.

But the thought leaders on talk radio and Fox do more than shape opinion. Backed by their own wing of the book-publishing industry and supported by think tanks that increasingly function as public-relations agencies, conservatives have built a whole alternative knowledge system, with its own facts, its own history, its own laws of economics.

I refuse to believe that I am the only Republican who feels this way. If CNN’s most recent polling is correct, only half of us sympathize with the tea party. However, moderate-minded people dislike conflict—and thus tend to lose to people who relish conflict.

The conservative shift to ever more extreme, ever more fantasy-based ideology has ominous real-world consequences for American society. The American system of government can’t work if the two sides wage all-out war upon each other: House, Senate, president, each has the power to thwart the others. In prior generations, the system evolved norms and habits to prevent this kind of stonewalling. For example: Theoretically, the party that holds the Senate could refuse to confirm any Cabinet nominees of a president of the other party. Yet until recently, this just “wasn’t done.” In fact, quite a lot of things that theoretically could be done just “weren’t done.” Now old inhibitions have given way. Things that weren’t done suddenly are done.