Rasmussen's poll does not inspire confidence. He's all over the place. Tomorrow Kerry will be up three points again. I think Bush is doing better than the numbers we're seeing from all these polls.
Tracking polls move a bit from day to day. The fact Rasmussen shows Kerry and Bush bouncing up and down a little may simply mean that they are being honest and reporting the normal statistical variations. Although I was getting the feeling they were looking at other polls over the last few days.