FROM MAINE TO CALIFORNIA, the midterm elections surely will test the candidates. But they also will test history, for history supports the belief–held by Democrats–that they will win both houses of Congress.

Today, Republicans hold 223 of 435 House seats. In the Senate this past year, there were 50 Democrats, 49 Republicans and a party of one, James Jeffords, whose defection from the GOP shifted control of that chamber to the Democrats.

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