The old quip about Obama's home neighborhood of Hyde Park is that it is a community of blacks and whites, living together, united against the poor. The premise of the joke is of course that it's a diverse community of high-income liberals.

While Hyde Park is certainly unique in the American landscape, it turns out that Obama's old home and new home actually have a lot in common in terms of voting patterns.

inoljt at Polikalblog crunched the numbers and found that Washington, D.C., which is among the most educated and highest income cities in the country, also might be the most pro-Obama major city in America, regardless of race. 

Two key stats:

- San Francisco gave Obama 84 percent in the 2008 elections; Washington gave him 93 percent

- Washington is 54 percent black and gave Obama 93 percent, Montgomery, AL is 53 percent black and gave Obama 59 percent.

The two maps below show race in D.C. and the electoral map of Clinton vs. Obama. To be sure, there is a correlation between race and preference for Obama, but don't be fooled: Obama won all 142 precincts in the District in both the primary and the general.

So if you're looking for somewhere to find the president's base, a good place to start is probably U Street.