Scott’s is a tracking poll that lags the daily changes we see in others. Remember the 52-45 Obama lead a couple days ago? I believe that was Gallup.
Rasmussen has a 3 day tracking poll. So does Gallup. They should have similar trends. They do not. Rasmussen, Hotline, ABC/WaPo are going one way (Obama), and Gallup, Zogby, Battleground, and several newspapers are going another (McCain). Most of these polls followed a similar pattern in 2004.