November 08, 2004

Which Polls Called the Presidential Election Right?

Polipundit measures both variance and predictive accuracy among the Presidential election polls on a state by state basis. Excellent analysis. Which ones did the best? Surprisingly enough, the much acclaimed Zogby comes in sixth. Simon fills in the details on where Zogby missed and Randy has a few comments to add. With the two best being:

#2 - A close finish, but number two is Rasmussen Reports. RR made predictions in 33 states, and in 13 Battleground States. RR got all their calls correct, without a single miss, and they were off by an average of 5.82 points. What hurt them was their wide variance of accuracy in support. Three of their final polls were the closest for their state, but another 3 of their final polls were off by more than 10 points. In the Battleground States, RR got all 13 right, and they were off by an average of 4.15 points.

#1 - (drum roll, please) Survey USA. SUSA made predictions in 30 states, and in 9 Battleground States. SUSA got 29 right and 1 wrong, and was off by an average of 3.70 points. So, why does SUSA win with 29/30, and beat RR take second with 33/33? It comes down to hitting the bullseye. EIGHTEEN of Survey USA’s final polls were the closest for that state, almost twice as many as every other major poll PUT TOGETHER! Also, none of their polls were invalidated for being more than 10 points off. In the Battleground States, SUSA got 8 right and 1 wrong, and was off by an average of 3.44 points. Three of SUSA’s final polls in Battleground States were the closest for that state, again the best of any poll.

Hat tip:Bryan Scott over at Backcountry Conservative and Slings&Arrows.

By Rusty Shackleford, Ph.D. at 01:47 PM | Comments |