It’s ironic that an intellectual tendency that champions free markets was ruined by the forces of commercialism, but that is the essential truth. Conservatism went down-market in search of revenue. It got swallowed by its own anti-intellectual media-politico complex — from Beck to Palin to Trump. Hillary Clinton is therefore now winning among white college graduates by 52 to 36 percent.

Second, conservative opinion-meisters began to value politics over everything else. The very essence of conservatism is the belief that politics is a limited activity, and that the most important realms are pre-political: conscience, faith, culture, family and community. But recently conservatism has become more the talking arm of the Republican Party.

Among social conservatives, for example, faith sometimes seems to come in second behind politics, Scripture behind voting guides. Today, most white evangelicals are willing to put aside the Christian virtues of humility, charity and grace for the sake of a Trump political victory. According to a Public Religion Research Institute survey, 72 percent of white evangelicals believe that a person who is immoral in private life can be an effective national leader, a belief that is more Machiavelli than Matthew.

As conservatism has become a propagandistic, partisan movement it has become less vibrant, less creative and less effective.

That leads to the third big change. Blinkered by the Republican Party’s rigid anti-government rhetoric, conservatives were slow to acknowledge and even slower to address the central social problems of our time.

For years, middle- and working-class Americans have been suffering from stagnant wages, meager opportunity, social isolation and household fragmentation. Shrouded in obsolete ideas from the Reagan years, conservatism had nothing to offer these people because it didn’t believe in using government as a tool for social good. Trump demagogy filled the void.