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A Note on the Polls
A Note on the Polls
I've received several emails from people asking about the polls. The national polls do seem pretty variable, so I thought I would toss in my two cents on them. First, we need a short primer on basic statistics. Real Clear...
Are the Polls Accurate?
Are the Polls Accurate?
online.wsj.com — Can we trust the polls this year? That's a question many people have been asking as we... approach the end of this long, long presidential campaign. As a recovering pollster and continuing poll consumer, my answer is yes -- with qualifications. To start ... (more) Are the Polls Accurate?
Don't Let the Polls Affect Your Vote
online.wsj.com — They were wrong in 2000 and 2004. (more) Don't Let the Polls Affect Your Vote
3rd Early Voting Indicator National Polls May Be Way Off
3rd Early Voting Indicator National Polls May Be Way Off
strata-sphere.com — I have been noting that national polls and some state polls may be way off based on... optimistic voter turnout models which are historically nonsense (see posts here and here). One of the first indicators of whether Obama really is enjoying some massive ... (more) 3rd Early Voting Indicator National Polls May Be Way Off
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Carol Platt Liebau: A Timely Reminder
Townhall.com Blog's TownHall Blog — Jay Cost's "Note on the Polls" is one of the most cogent explanations of the statistics involved in poll interpretation that this words-before-numbers person has yet seen. Jay notes the unusually large variations in the assorted presidential polls, and notes that it's attributable to the different samples the pollsters are using. The upshot is this: Obama is ahead, but no one -- no one -- really knows by how much. Ultimately, the only way to guarantee that it's by a lot is for Republicans to give up and give in. And wouldn't that be a shame, if it turned out that the ...

Bill Dyer: When it comes to polls and pollsters: Illegitimi non carborundum
Hugh Hewitt's TownHall Blog — ... ) I'm once again going to deviate from my normal disinclination to discuss polls, but it's only to bring you what I think is a well-informed and clear-eyed warning about the current polls you're reading. From Jay Cost at Real Clear Politics , based on his careful and comprehensive analysis of a wide range of current political opinion polls: So, we have made three observations: (a) relative to 2004, the standard deviation for Obama and McCain's polls are high, indicating more disagreement among pollsters at a similar point in this cycle; (b) the shape of the distribution of ...

10/27 Daily Kos R2K Tracking Poll: Obama 50, McCain 42
Daily Kos — ... of the new voters, who will likely be disproportionately young and minority voters favoring Senator Obama, will affect those models. No one knows for sure and this requires everyone to make untested assumptions about what is going to happen. That means that the average of polls may or may not be predictive of the final number; if some of the pollsters are using models that are just wrong (and there's no way to know that now), the averages could be off. Jay Cost walks us through the polling variations to illustrate that: ...

Polling alone
The Corner on National Review Online — ... ] I'm kind of beyond polls at this stage - although I found this analysis by Jay Cost very interesting. As he points out, the standard deviation this year is significantly higher than usual - which means that the polls that turn out to be wrong will be wronger than usual. Also, they're not a conventional central cluster - a pyramid with a few outliers at either end. The McCain graph has almost no cluster anywhere, suggesting that the number you get depends as much on the "turnout model" cooked up in the pollsters' office as on anything Mr and Mrs America tell 'em down the ...

A Tale Of Two Elections
The Next Right — ... and here.  They’re both well worth the read, but the gist is that the polls are showing variance that can’t be explained just by sampling error.    ...

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