It is clear that Mr. Roosevelt has been re-elected for a fourth term, and every good American will whole-hardheartedly accept the will of the people
I extend to President Roosevelt my hearty congratulations and my earnest hope that his next term will see speedy victory in the war, the establishment of lasting peace and the restoration of tranquility among our peoples.
I am deeply grateful for the confidence expressed by so many million Americans for their labors in the campaign.
The Republican Party emerges from the election revitalized and a great force for the good of the country and for the preservation of free government in America.
I am confident that all Americans will join me in a devout hope that in the years ahead Divine Providence will guide and protect the President of the United States.
Thomas Dewey, Remarks Conceding the Presidential Election at the Hotel Roosevelt in Washington, DC Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/345912