Hmmm, this actually dovetails quite nicely with the NYT's news today that ACORN overestimated the number of new voters they registered by almost a million:
http://www.nytimes.com/2008/10/24/us/politics/24acorn.html?_r=2&partner=rssnyt&emc=rss&oref=slogin&oref=slogin
They exaggerated the number of new voters by 65% - I'm sure that affectes the number of voters they've been sampling.
Im sure it has. Basic facts time -
Facts and unbiased actions by pollsters.
Party Id for presidential elections in the USA never exceeds a 4 point differential
2006 was a perfect storm for the Dems, and the Party ID advantage was an unheard of 5 points
ACORN over registers, and they exaggerate the numbers - add to Dem Party ID
Operation Chaos generates a ton of crossover votes - add to Dem party ID
Obama energizes the Dems, they don't know how to measure it, so they add to Dem Party ID
So, when you look at most polls internals, the Dem sample is 10 or more points higher than the Republican
Facts and biased actions by pollsters..
Sarah Palin enters the race, they don't know how to measure it, and do nothing since she is only the VP.
Bradley Effect - Though they have a rough idea on how to measure it, they figure the Obama effect will kill it, and they do nothing.
First Time Voters - they know how to account for this, but instead of using the standard RV-LV models, they make a new 'expanded' LV model.
Now there are polls that are coming out that show a much tighter race than expected, data that ACORN inflated its number of registrations, and now this - that the percentage of first time voters seems to be unchanged. As Ive said before in other posts, don't buy the polls. there seem to be significant problems with the numbers and methodology.