Ok, I took a peak at the approval/disapproval graphs over on
Pollkatz. He has the raw data for the average approval/disapproval scores on his website. I don't have time to crunch the real raw numbers on www.pollingreport.com, so I just used the averages. I just fit some straight lines to the data points and considered their slopes...
After 9/11, Bush's approval rating was dropping by 0.88% per
2-week period, and disapproval was increasing at 0.81% per period.
Since the Iraq war, the approval rating has been dropping by 1.59% per period, and disapproval increasing at 1.48%. Don't forget there's a margin of error in the polls and not everyone answers so the rates aren't mirror imaged. Note the nearly 2x increase in the rate of change for both slopes! The rate of change is also remarkably linear. Are there any poli sci types out there who care to comment?
PREDICTIONExtrapolating this, the AVERAGE approval score will hit 50% in the last week of Sept. The AVERAGE disapproval score will hit 50% in the 1st week of November :party:. This of course assumes there will be no major catastrophes (a terrorist attack in the US) or successes (Bush plants Bin laden's head on a pike in the Rose Garden). Enjoy!