"Theoretically rich and full of innovative data, Collective Political Rationality offers a major advance to the study of public opinion. By combining partisanship, political knowledge, issue salience, news, and elections into a single theoretical framework, Gregory McAvoy provides the most comprehensive picture of aggregate opinion ever."—Peter K. Enns, Cornell University"McAvoy provides a stunning advance to the study of the dynamics of public opinion by melding the factors of information, partisanship and salience with the precise components of Bayesian analysis needed for a new path-breaking perspective."—Janet M. Box-Steffensmeier, Ohio State UniversityThe central argument of Gregory McAvoy's fine book -- that the partisan loyalties that are often derided in popular commentary and academic writing actually provide the structure that makes collective public opinion sensible and rational -- is both theoretically novel, meticulously supported through careful analysis, and, I am convinced, spot on.—Paul Kellstedt, Texas A&M University