Exactly what it says on the tin. In this timeline, FDR dies on the date described in the title. What are the consequences, both in terms of American politics, and the war/post-war negotiations? Henry Wallace obviously succeeds to the Presidency. How does the election of 1944 unfold with the Democratic nominee dead less than a month before the election? Is there any time to alter the ticket, for example, having President Wallace take Roosevelt's place on the ticket? If not, how does the Democratic Party handle the last stages of the 1944 campaign? Similarly, how does Thomas Dewey react to his political opponent's death? Does Roosevelt's death, and the Presidency of Henry Wallace, change Dewey's political tone in the last period before the election?