民意调查，记者，政治作家-他们都认为杜威将以压倒性优势获胜。 1948年9月9日，埃尔莫·罗珀（Elmo Roper）对杜威的获胜充满信心，以至于他宣布在这次选举中将不再进行罗珀·波尔斯（Roper Polls）投票。 罗珀说：“我的全部意愿是预言托马斯·杜威的当选，并将我的时间和精力投入到其他事情上。” 杜鲁门毫不畏惧。 他认为，通过大量的努力，他可以获得投票。 尽管通常是争夺冠军而不是努力奋斗的人，但杜威和共和党人还是如此有信心，他们会赢得胜利（除非有重大失误），所以他们决定进行一场低调的竞选。
Polls, journalists, political writers – they all believe that Dewey will win with an overwhelming advantage. On September 9, 1948, Elmo Roper was so confident in Dewey’s victory that he announced that he would no longer vote for Roper Polls in this election. Roper said: “All my wishes are to predict the election of Thomas Dewey and to devote my time and energy to other things.” Truman is not afraid. He believes that through a lot of efforts, he can get a vote. Although they are usually the champions rather than the hard-working people, Dewey and the Republicans are so confident that they will win (unless there are major mistakes), so they decided to conduct a low-key campaign.