In this Nov. 4, 1948, file photo, President Harry S. Truman, at Union Station in St. Louis, holds a copy of the Election Day edition of the Chicago Daily Tribune, which erroneously announced "Dewey ...
The suspenseful 1948 presidential election exposed the consequences of flawed polls, as Truman's astonishing victory upended expectations and forever changed how pollsters make predictions. Untold is ...