Roosevelt's fourth nomination was largely unchallenged. The contention lay in the vice-presidential nomination. Although the party's conservatives could not stop FDR from winning the nomination, the obvious physical decline in the President's appearance, as well as rumors of secret health problems - led many delegates and party leaders to strongly oppose Henry Wallace. Wallace, who was FDR's second Vice-President, was regarded by most conservatives as being too left-wing and personally eccentric to be next in line for the Presidency. Numerous party leaders privately told Roosevelt that they would fight Wallace's renomination, and they proposed Missouri Senator Harry Truman, a moderate who had become well-known as the chairman of a Senate wartime investigating committee, as FDR's new running mate. Roosevelt, who personally liked Wallace and knew little about Truman, reluctantly agreed to accept Truman as his new running mate to preserve party unity. Even so, many liberal delegates refused to abandon Wallace, and they cast their votes for him on the first ballot. However, enough large Northern, Midwestern, and Southern states supported Truman to give him the victory on the second ballot. The fight over the vice-presidential nomination proved to be historic, as FDR's declining health led to his death in April 1945, and Truman thus became the nation's 33rd President.[1]
President Roosevelt was making a trip to the South Pacific in order to discuss military strategy with General Douglas MacArthur, and thus didn't attend the convention. This was the last time that a presidential nominee failed to attend a national convention during the 20th century.