I don't think Rasmussen's daily Presidential tracking poll is all that useful, except perhaps in long-term trends.

That being said, Bush held a 4-5 point lead in the poll in the days immediately following the convention, and now? Tied to the decimal point.

The way the poll works is that each day's poll is the combined results of the previous three days of polls. Kerry went from being down 4-5 to an exact tie in a space of 3 days. Would that mean that the most recent day or two of polling showed Kerry with a lead?