Okay, I've slain the beast, I have attempted using precinct maps to determine Phoenix Arizona. The surprise was that Obama's margin was not very big.
In my chart on scribd, I have entered the totals as : Obama 170934, McCain 155731
but they break down this way : precincts that are all in Phoenix or look like they'e
re mostly in Phoenix voted Obama 157104 McCain 147251; precincts that look particularly split voted : Obama 13830 McCain 8480.
The tragic part here is that only 335,000 people voted in Phoenix.
http://www.scribd.com/doc/13474955/2008-VOTE-FOR-PRESIDENT-Top-CitiesNext big city (well not any more) is Birmingham Alabama. There is an election there so the city posted a list of polling places. I was able to match up all but 8 to the Nov 2008 results. Trying to find out those numbers. Current vote for Obama : 86.6%