Is the bounce fading?

http://election.princeton.edu/2008/09/09/national-poll-update-a-perfect-tie-00-10/#more-907

In five polls released today, all spanning September 6-8, the Obama-McCain margin is 0.0 +/- 1.0%, a perfect tie. Is this apparent tightening the end of a bounce - or just random fluctuation?

The five polls used (Pollster/RCP) are:

* NBC/WSJ (Obama +1%)
* American Research Group (Obama +1%)
* Rasmussen Daily Tracker (tie)
* Diageo/Hotline (McCain +1%)
* Gallup Daily Tracker (McCain +5%)

Recent Gallup data points have been outliers. They are said to emphasize voter enthusiasm in their likely-voter screen more strongly than other organizations, a plausible reason for the difference. In any event, my use of median-based statistics allows outliers to be used without giving them excessive influence. (Click the link - in Canada they learn this in 7th-grade. We need more of that here…)

much more info at: http://election.princeton.edu/

I never learned anything like that until my Stats class at university.