David Wallace Stewart (January 22, 1887 – February 10, 1974) served as a United States Senator from Iowa from August 7, 1926, until March 3, 1927, serving out the unexpired term of a senator who died soon after he was defeated for re-election in a Republican primary.Born in New Concord, Ohio, Stewart attended public schools and graduated from Geneva College (in Beaver Falls, Pennsylvania) in 1911.