Southern Cities Won It for Obama

According to the Daily Yonder via Facing South, the South was the only region Obama won in the Democratic primaries, and cities put him in the winners circle:

Within the South, Obama only won the cities, but that vote was large enough to wipe out Clinton's advantages across the rest of the country. Sen. Obama won southern urban areas with more than 60 percent of the vote, running up a 1.44 million vote margin. Most of Obama's advantage came from just 27 urban counties in the South.