Some Republicans asked General Douglas MacArthur to run against Roosevelt , but his campaign quickly collapsed . The 1944 Republican National Convention selected Thomas E. Dewey , the Governor of New York and an internationalist . The opposition lambasted FDR and his administration for domestic corruption , bureaucratic inefficiency , tolerance of Communism , and military blunders . Labor unions threw their all-out support behind Roosevelt . Roosevelt and Truman won the 1944 election by a comfortable margin , defeating Dewey and his running mate John W. Bricker with 53.4 % of the popular vote and 432 out of the 531 electoral votes
1944 Republican National Convention
1944 Republican National Convention
Presidency of Franklin D. Roosevelt, third and fourth terms