The October 2012 issue of PS published a symposium of presidential and congressional forecasts made in the months leading up to the election. In the following articles, the forecasters assess the accuracy of their models.
A month after Election Day and well after the post-mortems had been written, vote counting continues. The national two-party popular vote percentage for President Obama used in these postmortems was updated to 51.8\%. As the issue goes to press the two-party vote share for President Obama now stands at 51.9%.
Editor's Note: A typographical error in the October 2012 issue ofPSforecasting symposium's summary table of the forecasts (PS: Political Science and Politics45 (4): 612) stated that Klarner predicted Obama would receive 51.2% of the two-party popular vote. His prediction was that Obama would receive 51.3%.
We regret the error.