Wall Street Journal, July 1, 2014.

Excerpt:

Social conservatives. Libertarians. Country-club conservatives. Tea party conservatives. Everybody in politics knows that those sets of people who usually vote Republican cannot be arrayed in a continuum from moderately conservative to extremely conservative. They are on different political planes. They usually have just enough in common to vote for the same candidate.

Why then do we still talk about the left in terms of a continuum from moderately liberal to extremely liberal? Divisions have been occurring on the left that mirror the divisions on the right. Different segments of the left are now on different planes.

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