The Republican Party is a sick joke on us.

Important as they are, our political divisions are the iceberg's tip. When pollsters ask the American people whether they are likely to vote Republican or Democrat in the next presidential election, Republicans win growing pluralities. But whenever pollsters add the preferences "undecided," "none of the above," or "tea party," these win handily, the Democrats come in second, and the Republicans trail far behind. That is because while most of the voters who call themselves Democrats say that Democratic officials represent them well, only a fourth of the voters who identify themselves as Republicans tell pollsters that Republican officeholders represent them well. Hence officeholders, Democrats and Republicans, gladden the hearts of some one-third of the electorate -- most Democratic voters, plus a few Republicans. This means that Democratic politicians are the ruling class's prime legitimate representatives and that because Republican politicians are supported by only a fourth of their voters while the rest vote for them reluctantly, most are aspirants for a junior role in the ruling class. In short, the ruling class has a party, the Democrats. But some two-thirds of Americans -- a few Democratic voters, most Republican voters, and all independents -- lack a vehicle in electoral politics.