On the evening of November 2, 1948, America’s newsrooms confidently prepared for what seemed inevitable: Thomas E. Dewey’s victory over Harry S. Truman in the U.S. presidential election. Radio commentators and pollsters had spent weeks predicting the Republican governor’s triumph. The media’s certainty was so complete that some newspapers even went to press before final results were tallied, and on November 3, the Chicago Daily Tribune famously ran with the headline “DEWEY DEFEATS T...
