Obama's approval ratings have been flat since the bill's passage, even though most analysts predicted he would enjoy a very modest bump in the polls. Here's The Examiner's Chris Stirewalt
...his job approval, support for the health care bill and everything else is pretty much flat since he achieved his victory and five consecutive news cycles of glowing coverage.
I like Victor Davis Hanson's explanation
Constant campaigning, photo-ops, fluff interviews, adulatory essays in the corrupt media — all this can give a one or two point plus in the polls. But the reasons the bumps are transitory and followed by net losses after a week or two is that the public now realizes we are broke.
Perhaps the tea parties are evidence of this.