Democratic Rep. Kendrick Meek of Florida is seeking to move congressional offices and grab his state’s senate seat, and if he wins this Tuesday’s primary, he’ll be one step closer. In an effort to make that happen, an independent group has come to the aid of Meek’s modestly-financed campaign—relative to his competitors—and has spent $245,000 placing ads to discredit his opposition, specifically Jeff Greene, a wealthy businessman who has self-financed his run for office.

The large amount of money dedicated to running ads is keeping with  what is happening in other parts of ...