bad methodology or home cooking?

Why is the Newsweek poll showing Barack Obama with a 15 point lead getting so much attention? And why is it being accepted so uncritically? Might it be what people want to hear?

According to Backcountry Notes something looks funny about Newsweek's numbers, especially when they are compared to the other numbers. He has a point; take a look.

Looking at the polls tracked on RealClearPolitics, I note the following: 

DATE          POLL                            OBAMA       MCCAIN     OBAMA LEAD

June 18    Reuters/Zogby            47                        42                   +5 

June 19    IPSOS                          50                        43                   +7

June 19    FOX News                  45                        41                   +4 

June 21   USA Today/Gallup      50                        44                    +6

June 21    Newsweek                  51                        36                   +15

June 22    Rasmussen Tracking    49                        42                   +7

June 22    Gallup Tracking              46                        44                   +2

I don't know how Newsweek managed to get results so far from the rest of the spread ("with six other polling organizations reporting an Obama lead in the range of +2 to +7, averaging +5, Newsweek comes out with a fifteen-point Obama lead"), but it appears even if the Newsweek number is is legitimate, it's an outlier.

Based on the post author's experiencing in polling, he's smelling a rat:

I majored in political science, studied polling techniques, and took part in taking opinion-poll surveys, so I know something about this; and I am puzzled, to say the least, that the Newsweek numbers are so far out of the range of random error that something seems to be wrong.

If anyone has a better explanation, I'd be glad to hear it; but it looks to me like this is bad methodology or home cooking.

Remember this?

NewsweekFlagTrash.jpg

Perhaps the poll belongs where Newsweek put the flag.

UPDATE: Commenter Physics Geek asks a good question:

Wasn't it Newsweek that reported back in the fall of 2000 "GORE BY 10%" on its cover?
Yes. Here's what Newsweek said:
Just before the Labor Day kick-off of the fall presidential campaign, Al Gore has surged to his largest lead yet--ten points--over Texas governor George W. Bush. In in a new Newsweek poll, conducted Aug. 30 and 31, Gore lead Bush 49 percent to 39 percent in a four-way race. Ralph Nader of the Green Party draws three percent and Reform Party candidate Pat Buchanan, one percent. In a two-way race, Gore leads Bush by 12 points, 53 to 41 percent.
And of course it was the same Newsweek that reported the phony Koran desecration story in 2005.

I'd say the former is at least bad methodology, but the latter is definitely home cooking.

MORE: Via Glenn Reynolds, Newsweek says that Clarence Thomas is white.

Does that mean he's an outlier too?

posted by Eric on 06.23.08 at 12:11 AM





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Comments

While I've been hearing about this "15 point lead" issue for a few days now, this is the first time I've seen the numbers. What I find curious is that it's getting played as "Newsweek polls Obama suspiciously high", whereas the numbers indicate more something along the lines of "Newsweek polls McCain suspiciously low". Among the other numbers, 51% for Obama doesn't look anywhere near as strange as the 36% for McCain.

Jeremiadbullfrog   ·  June 23, 2008 01:23 AM

Politics has irredeemably corrupted science. I no longer consider objectivity a feature of the modern intellectual--though he expects me to continue to do so.

Brett   ·  June 23, 2008 08:13 AM

Yeah, that 36% looks awfully suspicious.

If you Google the phrase "15 point lead" you'll see it's the most exciting development since sliced bread.

Eric Scheie   ·  June 23, 2008 09:31 AM

Wasn't it Newsweek that reported back in the fall of 2000 "GORE BY 10%" on its cover? I'm pretty sure that they've got the same pollsters working for them now.

physics geek   ·  June 24, 2008 09:20 AM

Wasn't it Newsweek that reported back in the fall of 2000 "GORE BY 10%" on its cover?

Yes, and it was the same Newsweek that reported the phony Koran desecration story:

http://www.cnn.com/2005/WORLD/asiapcf/05/16/newsweek.quran/

Eric Scheie   ·  June 24, 2008 03:46 PM

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