Only the 'rat patronage is the same.
I don’t dispute your numbers. Had Bush been running against a black candidate, however, I think the 94% value is more likely. It happens in Philly in every single election—94% is the floor, with 97% more typical. I’ve seen it as high as 99%. In my experience, no voting bloc is more racist (or could possibly be, given that the maximum is 100%).