It's a presidential campaign like no other. The candidates have been falling all over each other in their rush to declare the depth and sincerity of their religious faith. The pundits have been just as eager to raise questions that seem obvious and important: Should we let religious beliefs influence the making of law and public policy? If so, in what way and to what extent? Those questions, however, assume that candidates bring the subject of faith into the political arena largely to justify -- or turn up the heat under -- their policy positions. In fact, faith talk often has little to do with candidates' stands on the issues. There's something else going on here.

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