I think you have hit the nail on the head. A lot of these polls are to cause division in the Congressional ranks. A secondary reason for the concentration on the polls is to affect the 2006 elections. If they think they can diminish GW's popularity, then perhaps he won't be such an asset in campaigning for congressional and senate candidates.
Polls will not diminish attendance at Red State Rallies.
The only reason democrats in DC go to Bush speeches is because cameras are present.
I think this CNN (new tone new tone) story which follows the same old pattern of CNN, is going to be used by democrats who have NOTHING to argue.
Approval is down so no private accounts.
Approval is down so no conservative judges
Approval is down so troops must surrender
Approval is down so we must raise taxes
Approval is down so we must fund more AIDS
Approval is down so we must increase PBS funding