Pollster Report Card: All Pollsters x All 2008 Contests, Median Error, Through 05/06/08
SurveyUSA Breaking News - 104 days ago
41 pollsters have a released a public poll in the 7 days before one of the 2008 presidential primaries. Here is a high-level analysis of pollster performance, sorted from lowest Median Error to highest (where lower is better, and zero is perfect).
A separate posting will be made with the same data sorted by Mean (average) Error.
(click on the chart until legible; all supporting detail follows on the jump).
Detailed view of the same data follows:










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