There's an interesting graph <Edited out>. It shows the poll numbers since the beginning of September plotted continuously. Gore was ahead in the Oct 2-4 period, by about 11 points, and then the lines for Bush and Gore switch themselves around to the current numbers. Seems that the debate may have not been as positive for Gore as we first thought.
<edit> The link didn't work, sorry. It's at the bottom of the page, labeled "COMPLETE TRACKING TREND ON HORSE RACE".