Obama DNC Bounce
No question about it - the DNC was a much better convention than the RNC. The RNC lacked a consistent theme and offered very little other than "Our Guy Isn't Obama." You can bash the other guy, but you have to have a positive vision and philosophy that people can choose to follow.
In any event, it looks like President Obama got a 5-6 point bounce (Romney got no bounce) following the DNC.