It's really not surprising that in a time of sky-high gas prices, natural disasters, politically-motivated witch-hunts, etc., some polls may indicate voter dissatisfaction.
The problem is that the dems have shot their wad far too early, and by the time next November rolls around, all this stuff will either be resolved or discredited. When faced with a choice between the dems and the reps, the voters will make the same choice they made last year. The reason? The dems have their heads even further up their ass then the reps do, and have no idea what they stand for, aside from full capitulation in the war on terror.