2008 Pollster Report Card
The table below is an assessment of pollster performance in the 2008
Presidential election. The pollsters were graded on both the accuracy of
their final poll (popular vote) and the consistency of their polling during
the month of October. The overall score is a weighted average of their
Accuracy and Consistency numbers. The weighting is 75% accuracy and 25%
consistency. Formula details are at the bottom of this page.
Poll Score Grade Accuracy Consistency
Rasmussen Reports 91% A- 92% 86%
Ipsos/McClatchy 89% B+ 92% 79%
CNN/Opinion Research 88% B+ 92% 77%
Fox News 84% B 92% 61%
Pew 83% B- 92% 56%
GWU/Battleground 79% C+ 92% 41%
Diageo/Hotline 77% C+ 77% 79%
NBC News / WSJ 76% C 77% 75%
Gallup Traditional 73% C- 77% 63%
Marist 67% D+ 62% 82%
ABC News / Wash Post 67% D+ 62% 82%
IBD/TIPP 66% D 77% 34%
Gallup Expanded 66% D 62% 78%
CBS News / NYT 60% D- 62% 56%
Reuters/C-SPAN/Zogby 35% F 31% 48%
Source from: http://www.nowpublic.com/world/analysis-most-accurate-polls-200
