Fordham University's Department of Political Science ranked the accuracy of 28 public polling organizations based on final poll estimates and their proximity to actual nationwide voteshares for the two candidates. Most polls (18) overestimated Romney's support as compared to 10 polls that overestimated Obama's strength. The results:

1. PPP (D)*
1. Daily Kos/SEIU/PPP*
3. YouGov*
4. Ipsos/Reuters*
5. Purple Strategies
6. NBC/WSJ
6. CBS/NYT
6. YouGov/Economist
9. UPI/CVOTER
10. IBD/TIPP
11. Angus-Reid*
12. ABC/WP*
13. Pew Research*
13. Hartford Courant/UConn*
15. CNN/ORC
15. Monmouth/SurveyUSA
15. Politico/GWU/Battleground
15. FOX News
15. Washington Times/JZ Analytics
15. Newsmax/JZ Analytics
15. American Research Group
15. Gravis Marketing
23. Democracy Corps (D)*
24. Rasmussen
24. Gallup
26. NPR
27. National Journal*
28. AP/GfK

(Polls with a * indicate polls that overestimated Obama's strength) Read More