A chronological list of the surveys, data, and analysis conducted to determine AllSides Media Bias Ratings™. See which outlets recently underwent an AllSides Editorial Review, Blind Bias Survey, independent review, or other verification method.
During an AllSides Editorial Review, the AllSides team — which includes people from across the political spectrum — reviews the works of a source from the past six months to the present day and comes to a general consensus on its bias. While AllSides does not use a formalized grading rubric to assess media bias, our participants are trained to understand and look for different types of bias. Learn more about the Editorial Review process here.
An AllSides Independent Review is our lowest level of analysis. An AllSides editor, or multiple editors, reviews works of a source and comes to a general conclusion on its bias; they also investigate what the media and other sources, both partisan and nonpartisan, reported about the political leanings of a source. This method is frequently used for initial bias ratings before more robust methods can be applied, or ratings for which the bias of an outlet is relatively easy to discern.