Comparison of final national polls for 2012 presidential election

Margin of Error has a comparison of how 26 different polls did at predicting the national popular vote for president.

• Best Performers (in order) :   
• You Gov,   Reuters/Ipsos,   Daily KOS/ SEIU/PPP,   PPP
• Worst Performers (in order):  
• Gallup,   Rasmussen,   NPR - overestimated Romney
• UT / National Journal - overestimated Obama

The Monkey Cage has a similar comparison without the margin of error ranges