I've been keeping a rolling average of all poll results (by all pollsters) since May. I have yet to show either candidate ahead outside the margin of error.
My point is that the other polls show some movement in response to events. Rasmussen never does. The recent polls have shown the President with a lead beyond the MOE and I believe that Kerry had a lead above the MOE in some earlier polls before the SBVT ads hit. Even the ultra-partisan Chrissy Mathews agrees that Bush is ahead by around seven points. The actions of the Democrats since the Republican convention have spoken loudly that they know Kerry is behind.
Merging several polls and keeping a moving average is not the best way to determine if individual polls have leads above the MOE. I guessing that if you drop Rasmussen out, this last round of polls would show the President with an above-the-MOE lead.