Berg Comments on IEM Accuracy

Following the vice presidential debate on Tuesday, the Iowa Electronic Markets (IEM) were mostly unchanged, but George W. Bush's lead in the IEM had narrowed against John Kerry since the first presidential debate. JOYCE BERG, IEM co-director and associate professor of accounting in the UI's Tippie College of Business, said that since 1988, the IEM has been 75 percent more accurate in predicting the outcome of the presidential election compared to opinion polls. The average margin of error in the IEM is about 1.4 percent she added. CNBC has been tracking IEM prices regularly during the presidential campaign. (No Link Available)