I compiled a map of this throughout, so here it is, finished.
I might do 2004 now.
Do you know how Many CDs were won by Obama ?
242. 193 for McCain.
So, democrats won 15 more districts in the House elections that Obama did...
As has been stated above there were a lot of areas where generic democrats did better than Obama( most of the non black south, Appalachia, East Ohio/West PA). Then there were places where Obama did better than a generic democrat like most of California, Illinois( obviously), and most of the upper midwest. That is actually pretty significant imo, but still in this election a democrats did better at the local level than at the presidential level.