I agree with his analysis. In November, 2001, I went on record on FreeRepublic with the prediction of the Republicans gaining 1-3 seats in the Senate, and 5-7 seats in the House. I repeated that prediction in print in the current issue of the magazine of the American Academy of Actuaries (second link below, warning: highly statistical).
I stand by that now, which is in line with Gizzi's work.
Congressman Billybob