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The Gallup Poll Cumulative Index: Public Opinion, 1998-2007
The Gallup Poll Cumulative Index Public Opinion 19982007 Author:Alec M. Gallup The Gallup Poll is the most comprehensive single source of American public opinion. It is the only work that captures the constantly shifting opinions and perceptions of Americans. The Cumulative Index allows researchers easy access to the results of polls conducted between 1998 and 2007.