At the July 1940 Democratic Convention in Chicago , Roosevelt easily swept aside challenges from Farley and Vice President Garner , who had turned against Roosevelt in his second term because of his liberal economic and social policies . To replace Garner on the ticket , Roosevelt turned to Secretary of Agriculture Henry Wallace of Iowa , a former Republican who strongly supported the New Deal and was popular in farm states . The choice was strenuously opposed by many of the party 's conservatives , who felt Wallace was too radical and " eccentric " in his private life to be an effective running mate . But Roosevelt insisted that without Wallace on the ticket he would decline re-nomination , and Wallace won the vice-presidential nomination , defeating Speaker of the House William B. Bankhead and other candidates
July 1940 Democratic Convention
1940 Democratic National Convention
Franklin D. Roosevelt