What if Thomas Dewey had defeated Roosevelt in 1944? The states Roosevelt won which pushed him over 266 were close, and if Dewey had won every state where he was defeated by 5.1% or less he could have become president. For this to become possible let's say Roosevelt selects Byrnes, causing African-American voters to either defect en masse or stay home. Labour voters also are less enthusiastic about Byrnes, along with Catholics (dissappointed about Byrnes becoming a Protestant) and Protestants (who think that Byrnes is still a Catholic). Have Roosevelt collapse during a rally, and have Dewey cajole Roosevelt in a radio debate forcing Roosevelt to accept and then lose the debates (Have Dewey sound more confident) along with a military failure in either Europe or the Pacific, Roosevelt could have lost the election. With Dewey becoming president in 1944, how does this impact American politics onward?