Considering this is Zogby, a liberal that slants polls for liberals, I can bet you can add 5 points to GW’s ratings and subtract 5 points from the democratic controlled Congress. All you have to is look at Zogby’s talking points, post-katrina, Iraq and the econmy getting worse. As a conservative, I know of no one personally that is talking Katrina and blaming the government and from where I sit the economy is still looking pretty good. Zogby picked three sound bites all used to illicit disgust towards republicans.
I’d go as far as at least 7 points to the president’s approval rating and substract the same amount from congres, but that is just my opinion