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Alan Abramowitz

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Dramatic Change in Racial Makeup of Gallup Tracking Poll as Likely Voter Results Begin

Posted: 10/10/2012 2:08 pm

Evidence from Gallup's weekly presidential approval results indicates that the racial makeup of its tracking poll changed dramatically between the final week of September and first week of October -- a change that coincides with the beginning of Gallup's reporting of likely voter results in the presidential election.

Although Gallup does not report the racial composition of its tracking poll sample in its weekly presidential approval results, we can estimate the racial makeup of the sample by extrapolating from the reported approval rating of the president among whites, nonwhites and all adults. The estimated nonwhite percentage of the sample for the past five weeks was as follows:

2012-10-10-poll1.jpg


Given the size of Gallup's weekly adult sample, typically over 3500 respondents, the increase from the previous four weeks to the first week of October is very unlikely to be explained by random variation alone. This change, however, does bring the nonwhite share of Gallup's sample much more closely into line with the 2010 Census estimate of the nonwhite share of the U.S. adult population which was 31.8 percent.

In the past, some observers -- including Mark Blumenthal of the Huffpost Pollster -- have criticized Gallup's sampling procedures for under-representing nonwhites in their tracking poll. Assuming that the change seen in the first week of October is permanent and not just a one week aberration, the increase in the percentage of nonwhites in Gallup's latest weekly tracking poll sample is a welcome development that should produce more accurate estimates of not only presidential approval but also support for the presidential candidates among registered and likely voters.

 
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Evidence from Gallup's weekly presidential approval results indicates that the racial makeup of its tracking poll changed dramatically between the final week of September and first week of October -- ...
Evidence from Gallup's weekly presidential approval results indicates that the racial makeup of its tracking poll changed dramatically between the final week of September and first week of October -- ...
 
 
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HUFFPOST SUPER USER
Bigwater1
Police Chief, USAF, Apollo Spacecraft O
12:21 AM on 10/21/2012
Well, Gallop may be more accurate in what is really going to occur when the voting in over and done. According to some respected pollsters using the racial demographics of the 2008 election, which were significantly different from the normal profile, is likely to be highly inaccurate in the forthcoming election. This is due to the fact that enthusiasm for Obama is certainly not as high as it was when he was an unknown quantity. He has managed to alienate many of his former base including Christian blacks and Latinos either with his failure to address their concerns or his controversial positions on matters such as gay marriage. Additionally, a number of the polls previously showing wide margins for Obama in the swing states had even higher Democratic demographics than the actual 2008 voting breakdown. While it is hard to completely scientifically assess voter enthusiasm some prominent supporters of Obama have vocally expressed their displeasure publicly and in some cases have expressed their actual intention to vote for Romney.
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Saltio
da come stanno le cose
05:09 PM on 10/18/2012
Duh! Didn't even realize it that Gallup's sampling procedures for under-representing nonwhites in their tracking poll. NOT! :->
06:57 PM on 10/11/2012
What you mean they do "not report the racial composition"? Yes they do. It is right here:
http://www.gallup.com/poll/154577/Election-2012-Weekly-Demographic-Data.aspx

Between 9/17 and 10/7 "non-whites" composed less than 17% of their total 9,000+ person sample.
03:13 PM on 10/11/2012
So Gallup chooses to change its racial makeup five weeks out from the most decisive Presidential election in decades. And HP would like us to believe its occurence is because of the ....2010 Census.....who's results have been widely available.........for over a year..........
We are also asked to accept this change......has absolutely nothing..........to do with the Holder DOJ joining a lawsuit........against Gallup on August 22,2012.....a scant five weeks before this 20% change in the racial demographic that simply favors this President.
This morning we're told first time unemployment claims fell by 30,000, to the lowest since 2008. Its not till hours later, after the headlines and the stock market rises 100 points on the news, ending a three day slide, that we're told.......uh oh......California is missing from the BLS number.
California, the most populous state, who's own unemployment is two full points higher than the national average.
I know........its all coincidence......keep moving....nothing to see here......ignore all those conspiracy nuts....prosperity is right around the corner......
HUFFPOST SUPER USER
chiefpayne
01:11 PM on 10/11/2012
LOL

I'm SHOCKED...SHOCKED I tell you!

We've only been SAYING this for some time.

The polls have been giving Democrats anywhere from +8 - +14 points because they were using the turnout from the 2008 Presidential Election.

They would have done BETTER to us the figures from the 2010 elections. Or for that matter, just to make it all even up. Either way, Romney would be ahead of Obama!!!
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ssnt
670 Economists(6 w/ Nobel Prize) like Mitt's plan
11:40 AM on 10/11/2012
Finally some truth from HP
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jlessig
Not willing to watch the country slip away
11:29 AM on 10/11/2012
I am sure it has nothing to do with the lawsuit put forth by Obama's Attorney General against Gallup. All of a sudden, the numbers seem to support Obama significantly more.

Too many polls try to shape public opinion rather than measure it. To Gallup's credit, they did not buy into the bogus jobs report that added over 800K part-time jobs to the employment numbers. As with Justice Department concern over the "accuracy" of polls, "official" government numbers being adjusted with less than a month before the election is just a coincidence.
11:03 AM on 10/11/2012
This admin is appalling.
TeaPartier
Go Steelers! Go Pens! Go Bucs!
10:05 AM on 10/11/2012
So, they're doctoring the polls to make Obama look better now. Considering that in 2008 the domographics of the people who voted were 19.5% blacks and Latino's, and that was a WINDFALL year for minority voting, unlikely to be duplicated this year, it seems a stretch to sample 30%. But, maybe that's why Gallup was 4 points off in 2008. they had Obama winning by 11 and he won by 7. Maybe they should take a second look at their methodology.
05:28 PM on 10/10/2012
Why does matching census have to do with anything if different ethnic groups have different voting rates or even have different eligibility to vote (% registered or legal) ?
04:17 PM on 10/10/2012
This coincides exactly with news that Gallup is now calling 50/50 landlines and cell phones. Coincidence?
HUFFPOST SUPER USER
tyruler
03:52 PM on 10/10/2012
I disagree, remember it is not the Census makeup that should count but the likely voter racial composition of recent elections since many Hispanics can't vote (not citizens).
03:22 PM on 10/10/2012
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