From The Whistler’s reader blog:

According to Winston’s analysis, there is a material discrepancy between the party identification listed by people in exit polls (people who actually voted) between 1992 and 2004, and those used over the last few weeks.

In short, between 1992 and 2004, only once did one party enjoy an advantage as large as 4 points over the other in party ID. But in recent polling samples used by eight different polling organizations (USA Today/Gallup, CBS/NYTimes, ABC/Washington Post, CNN/Opinion Research, Newsweek, AP/Ipsos, Pew, and Time), the Democratic advantage in the sample surveyed was never less than 5 points.

Read the whole thing.

I think this plays perfectly into a prediction I made earlier today.  Basically, I think the idea that Republicans are going to lose control of both houses of Congress is a big load of hype being perpetuated by the same sensationalist media that led us to believe that thousands were being murdered and gang raped in the Super Dome during hurricane Katrina.