This surpised me, I thought for sure Obama was losing at least some support among Dems or Independents....
Public Policy Polling: Where Obama's really dropping
When talking about the decline in Barack Obama's approval numbers the media usually focuses on independents, or whether he's losing his base. The biggest reason his numbers are going down right now though is not related to either of those things- it's because he's losing whatever small amount of bipartisan appeal he once had.
On our national survey in June Obama had an 82% approval rating with Democrats. Now it's 83%. He had a 46% approval rating with independents. Now it's 47%. No real change on either of those fronts. But with Republicans he's dropped from an 18% mark to just 10%. That shift is what put his approval rating below 50%- he's gone from a small amount of crossover support to a very small amount of crossover supports.