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Reply #11: From theleftcoaster.com: [View All]

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Home » Discuss » Archives » General Discussion: Presidential (Through Nov 2009) Donate to DU
althecat Donating Member (1000+ posts) Send PM | Profile | Ignore Fri Sep-17-04 06:07 PM
Response to Original message
11. From theleftcoaster.com:
From theleftcoaster.com:

This morning we awoke to the startling news that despite a flurry of different polls this week all showing a tied race, the venerable Gallup Poll, as reported widely in the media (USA Today and CNN) today, showed George W. Bush with a huge 55%-42% lead over John Kerry amongst likely voters. The same Gallup Poll showed an 8-point lead for Bush amongst registered voters (52%-44%). Before you get discouraged by these results, you should be more upset that Gallup gets major media outlets to tout these polls and present a false, disappointing account of the actual state of the race. Why?

Because the Gallup Poll, despite its reputation, assumes that this November 40% of those turning out to vote will be Republicans, and only 33% will be Democrat. You read that correctly. I asked Gallup, who have been very courteous to my requests, to send me this morning their sample breakdowns by party identification for both their likely and registered voter samples they use in these national and I suspect their state polls. This is what I got back this morning:

Likely Voter Sample Party IDs Poll of September 13-15
Reflected Bush Winning by 55%-42%

Total Sample: 767
GOP: 305 (40%)
Dem: 253 (33%)
Ind: 208 (28%)

Registered Voter Sample Party IDs Same Poll
Reflected Bush Winning by 52%-44%

Total Sample: 1022
GOP: 381 (38%)
Dem: 336 (33%)
Ind: 298 (30%)

In both polls, Gallup oversamples greatly for the GOP, and undersamples for the Democrats. Worse yet, Gallup just confirmed for me that this is the same sampling methodology they have been using this whole election season, for all their national and state polls. Gallup says that "This (the breakdown between Reeps and Dems) was not a constant. It can differ slightly between surveys" in response to my latest email. Slightly? Does that mean that in all of these national and state polls we have seen from Gallup that they have "slightly" varied between 36%-40% GOP and 32%-36% Democrat? I already know from an email I got from Gallup earlier in the week that in their suspicious Wisconsin and Minnesota polls they seemingly oversampled for the GOP and undersampled for the Dems. For example in Wisconsin, in which they show Bush now with a healthy lead, Gallup used a sample comprised of 38% GOP and 32% Democratic likely voters. In Minnesota where Gallup shows Bush gaining a small lead, their sample reflects a composition of 36% GOP and 34% Democrat likely voters. How realistic is either breakdown in those states on Election Day?

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