Nate Silver, polling aficionado for ESPN’s FiveThirtyEight.com, published a comprehensive ranking of American polling houses last week.
According to Silver’s analysis, Maine People’s Resource Center, the polling organ of the liberal Maine People’s Alliance, scored in the bottom fifth of all polling houses with a “C-“.
According to FiveThirtyEight.com, “pollster ratings are calculated by analyzing the historical accuracy of each firms’s polls along with its methodology. Accuracy scores are adjusted for the type of election polled, a firm’s sample size, the performance of other polls surveying the same race, and other factors.”
Another Maine-based polling house, Pan Atlantic SMS Group, earned a “B”.
See other rankings and more information about the ranking process here.