Bradley effect – Wikipedia, the free encyclopedia

Another Day, Another Democrat-Heavy Poll Sample

Poll Farce: Pew Oversamples Democrats to Boost Obama

Tainted Polls? Pew Oversamples Democrats To Boost Obama

Why Charges of Poll ‘Oversampling’ Are Usually Misguided –  New York Times

Quinnipiac Polling’s Peter Brown Tries To Defend Oversampling

Tainted Polls? Pew Oversamples Democrats To Boost Obama

Pew uses D+19 sample

Gallup and Rasmussen are the only 2 polls not oversampling

Partisan Trends in Party Affiliation- Rasmussen Reports™

 

 

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