Reply #8: several other works appear to contradict that [View All]

[wyldwolf]

The Pre-Election Polls of 1948. by Frederick Mosteller, for example.

And from Rutger University's Eagleton Institute of Politics:

Ironically, the polls themselves may have helped Truman's late surge to overcome Dewey when press reports of their surveys showing Dewey ahead energized the Democrats to mount late efforts to increase turnout, and made the Republicans over-confident of any need to get their own voters to the polls.

http://www.eagleton.rutgers.edu/e-gov/e-politicalarchive-1948election.htm