1940 Democratic presidential primaries were the selection process by which voters of the Democratic Party chose its nominee for President of the United States in the 1940 U.S. presidential election . Incumbent President Franklin D. Roosevelt was selected as the nominee through a series of primary elections and caucuses culminating in the 1940 Democratic National Convention held from July 15 to July 18 , 1940 , in Chicago , Illinois
1940 Democratic National Convention
1940 Democratic National Convention
1940 Democratic Party presidential primaries