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A good headline for 2010 might go like this: "Voters Tell Congress: Welcome to Unemployment."

Incumbents are easy to spot at debates this year — they're the ones with bags over their heads. Nude modeling on the résumé? No problem, as Scott Brown of Massachusetts proved. The fatal scandal is Washington experience. The public's opinion of Congress is at its lowest level in at least 25 years, according to polling by the Pew Research Center. For Republican Senator Robert Bennett of Utah, that translated into a third-place finish at his state's GOP convention, shutting him out of the primary. Senate majority leader Harry Reid is flailing in Nevada; Senator Arlen Specter appears to be drowning in Pennsylvania; House incumbents are bracing for a tidal wave, with...