Democrats who voted no: 6, 23, 25, 26, 27, 28, 29, 30, 32, 38.
Republicans who voted yes: 9.
No actual vote in the House, so I can't give you a list there.
Seeing how many white Obama districts...
6 - McCain
23 - white-plurality
25 - black
26 - black
27
28
29 - McCain
30
32
38 - McCain
8 McCain Dem FOR gay marriage
9 McCain Repub FOR gay marriage
So districts 23, 27, 28, 30, and 32 are white majority (or plurality in the case of 23) in 2000 and voted for Obama. Does anyone know anything about such districts? Perhaps some could be black-majority now, or is there a culturally conservative Obama vote, or just a maverick Senator?