The 1940 Republican National Convention opened at the Philadelphia Civic Center on June 24 , 1940 . As the delegates assembled , they discussed the war , the candidates , and Roosevelt 's appointment of two Republican interventionists to his cabinet four days before the convention . Henry L. Stimson , Secretary of War under President Taft and Secretary of State under Hoover , was restored to the War position , and Landon 's 1936 running mate , Frank Knox , was appointed Navy Secretary . The cabinet appointments divided the Republicans , who accused Roosevelt of dirty politics
1940 Republican National Convention
1940 Republican National Convention
Wendell Willkie