Wednesday, May 21, 2008

Forecasting Update

With almost all of the votes (95%) counted in Oregon it is pretty clear that the yesterday's outcomes did not deviate much from what was expected based on pre-primary polling data. The table below summarizes the accuracy of my pre-primary forecasts, which were based on the polling trends at Pollster.com


Clinton Percent of the Two-Candidate Vote


Forecast Vote

Actual Vote

Forecast- Actual

Kentucky

68.2%

68.6%

-.4 points

Oregon

43.5%

41.3%

2.2 points






The model nailed the Kentucky outcome and over-predicted Clinton's Oregon vote by 2.2 percentage points.

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