re: Great prognosticator- Nate Silver &538- 75% Dems take House

If I recall his algorithm was based on the raw data from polls (weighted by their historical reliability from previous elections) with variables added to account for other historical and/or parametric factors such as considering that the Dems had already been in office eight years. It's all on his website if you actually care. But we both know you are just being a smarmy prick...