By way of verification, fivethirtyeight.com’s Nate Silver has this gradation of pollsters across the nation.
Survey USA received an ‘A’. The firm used by the AJC, Abt SRBI, was given a ‘B+’. Public Policy Polling of North Carolina was graded at ‘B-‘. Landmark Communications got a ‘C+,’ and InsiderAdvantage was given a ‘D.’
via A bitter feud over ethics — and other hard-of-hearing stories from Perry | Political Insider blog.
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