People are fed up with Congress not stopping the war
tristero quoting Krugman : Voters are exasperated with the Democrats, not because they think Congressional leaders are too liberal, but because they don't see Congress doing anything to stop the war. Republican spin-meisters are constantly pointing out that Congress (controlled by Democrats) has lower approval ratings than Bush. What they don't point out is why : people want Congress to do more to stop the war, and to oppose and investigate Bush.