WASHINGTON -- In Britain, Canada and other civilized places, national elections are often called, run and concluded within six weeks. In America, election campaigns go on forever. It used to be one year, now it's two. No one planned this, but like other evolutionary artifacts (the Founders applied intelligent design to the general makeup of the U.S. government but never foresaw formal political parties, let alone the endless campaign), this crazy improvisation embodies a certain wisdom.
First, it tests a certain kind of competence. Managing a national campaign in a country of continental dimensions requires exceptional organizational skills. A fairly narrow competence, to be sure, but of major importance in a country where the president must run the behemoth that is the federal government.
The second function of the endless campaign is to build party consensus and democratic legitimacy, both of which contribute substantially to the astonishing stability and longevity of the American system. The presidential primary season is essentially a prolonged intra-party dialogue. It re-creates the Madisonian idea of factions and interests competing against each other, applied not to the legislature or the executive, but to the electoral process that produces both.
The job of the parties is to create a kind of pre-legislative consensus through the competition and conversation of the various factions -- ethnic, ideological, economic, geographic. The purpose of the endless presidential primary is to force the dialogue and, for all its haphazard meanderings and maddening trivialities, it does.
Unscripted, of course, and much of it goes nowhere. But not always. Perhaps Barack Obama's suggestion during a television interview that we should be moving away from preferences based on race to preferences based on class will be ignored. But perhaps it will be taken up by an opponent or the media and provoke a historic debate within the Democratic Party on affirmative action and a transition to a new national consensus.
Similarly, Rudy Giuliani wrestles with the abortion issue (and, in the eyes of many, loses). He will be asked the question repeatedly. He will have to answer repeatedly. Should he prevail as the Republican nominee, it will perhaps represent a historic shift in the very self-definition of American conservatism.
Charles Krauthammer is a 1987 Pulitzer Prize winner, 1984 National Magazine Award winner, and a columnist for The Washington Post since 1985.
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