Since 1948, when pollsters unanimously forecast a Dewey victory over Truman, media-sponsored polls have proliferated, accompanied by a growing unease about their accuracy. Pre-Election Polling probes the results of over 430 recent polls and taps the professional "lore" of experienced pollsters to offer a major new assessment of polling practices in the 1980s. In a study of unusual scope and depth, Crespi examines the accuracy of polls conducted before...