A question: The county above Erie (Niagra, I believe) barely swung D in 2008. What happened there?
It's interesting; nearly every county in the Buffalo MSA trended away from the Democrats in 2008, but in the adjacent Rochester MSA, most of them swung toward the Democrats. Strongly, too: Kerry won by a three-point margin in Monroe County, where Rochester is located; Obama won Monroe by nearly 18 points. In Erie, where Kerry won by 15 points, Obama's margin was a fraction of a point less than what it was in Monroe.
Some important differences between Rochester and Buffalo in 2008 (most still hold):
- Rochester was growing, Buffalo was losing population
- Rochester had a more educated population
- Rochester's work force was better paid
- (I think) Rochester had a larger student population