Ohio's_at-large_congressional_district--Donald_"Buz"_Lukens

Ohio's at-large congressional district existed from 1803 to 1813, from 1913 to 1915, from 1933 to 1953 and from 1963 until 1967, when it was banned by the Voting Rights Act of 1965.
From statehood in 1803 until the 1813 redistricting following the 1810 census, Ohio had only one member of the United States House of Representatives: Jeremiah Morrow.