On Nov. 3, 2008, seven new Democratic senators were elected, giving Democrats 58 votes. Eight months later, with the Minnesota Senate race settled and Arlen Specter having switched parties, Democrats secured the 60th vote to overcome filibusters and impose absolute control over the Senate for the first time in 31 years. In 78 days, American voters will render judgment on the record of the Senate Democratic Class of 2008, and on all 35 Democratic candidates seeking to perpetuate their Senate majority.

The Senate's Democratic...