1940 Democratic Party presidential primaries

From March 12 to June 27, 1940, voters of the Democratic Party elected delegates to the 1940 Democratic National Convention through a series of primaries, caucuses, and conventions. Incumbent President Franklin D. Roosevelt was selected as the party's presidential nominee despite not formally declaring a campaign for a third term. Supporters effectively drafted Roosevelt, who was non-committal about seeking re-election, amid rising concerns over war in Europe.

Ahead of the convention, the primary process and other means of delegate allocation had led to the New York Times to project that Roosevelt had 691.5 delegates in support of him, well above Garner's 69.5 and Farley's 38.5.