| | Following the death of Republican representative Martin B. Madden, De Priest ran for the House seat in Illinois' 1st congressional district with the backing of William Hale Thompson, the city's mayor.<ref>FascinatingPolitics (February 27, 2019). [https://fascinatingpolitics.com/2019/02/27/oscar-stanton-de-priest-the-first-black-congressman-of-the-20th-century/ Oscar Stanton De Priest: The First Black Congressman of the 20th Century]. ''Mad Politics: The Bizarre, Fascinating, and Unknown of American Political History''. Retrieved July 24, 2021.</ref> In a contest with four opponents in the 1928 election, De Priest won by seven percentage points.<ref>[https://www.ourcampaigns.com/RaceDetail.html?RaceID=262563 IL District 1 Race - Nov 06, 1928]. ''Our Campaigns''. Retrieved July 24, 2021.</ref> | | Following the death of Republican representative Martin B. Madden, De Priest ran for the House seat in Illinois' 1st congressional district with the backing of William Hale Thompson, the city's mayor.<ref>FascinatingPolitics (February 27, 2019). [https://fascinatingpolitics.com/2019/02/27/oscar-stanton-de-priest-the-first-black-congressman-of-the-20th-century/ Oscar Stanton De Priest: The First Black Congressman of the 20th Century]. ''Mad Politics: The Bizarre, Fascinating, and Unknown of American Political History''. Retrieved July 24, 2021.</ref> In a contest with four opponents in the 1928 election, De Priest won by seven percentage points.<ref>[https://www.ourcampaigns.com/RaceDetail.html?RaceID=262563 IL District 1 Race - Nov 06, 1928]. ''Our Campaigns''. Retrieved July 24, 2021.</ref> |