About the IEM

Previous Market Performance

Below are links to graphical representations of the performance from previous markets.

• IEM and Poll Accuracy, 2008 Presidential Race
• Prices Graph From the 1996 Presidential Winner Takes All Market
• Prices Graph From the 1996 Republican Convention Market
• Gallup vs. IEM Results From the 1996 Presidential Vote Share Market
• IEM Accuracy Compared to Polls
• IEM Average Absolute Prediction Error