United States House of Representatives elections, 1858
Ohio
Columns: District | Incumbent | Party | First elected | Result | Candidates
Ohio 5 | Richard Mott | Republican | 1854 | Retired Republican hold | James M. Ashley (R) 51.3% William Mungen (D) 48.7% | Ohio 7 | Aaron Harlan | Republican | 1852 | Lost renomination Republican hold | Thomas Corwin (R) 63.8% Charles W. Blair (D) 36.2% | Ohio 9 | Lawrence W. Hall | Democratic | 1856 | Lost re-election Republican gain | John Carey (R) 50.3% Lawrence W. Hall (R) 49.7% | Ohio 10 | Joseph Miller | Democratic | 1856 | Lost re-election Republican gain | Carey A. Trimble (R) 55.0% Joseph Miller (D) 45.0% | Ohio 12 | Samuel S. Cox | Democratic | 1856 | Re-elected | Samuel S. Cox (R) 51.8% Lucius Case (D) 48.2% | Ohio 13 | John Sherman | Republican | 1854 | Re-elected | John Sherman (R) 57.1% S. J. Patrick (D) 42.9% | Ohio 14 | Philemon Bliss | Republican | 1854 | Retired Republican hold | Cyrus Spink (R) 56.3% J. P. Jeffries (D) 43.7% | Ohio 15 | Joseph Burns | Democratic | 1856 | Lost re-election Republican gain | William Helmick (R) 50.7% Joseph Burns (D) 49.3% | Ohio 18 | Benjamin F. Leiter | Republican | 1854 | Retired Republican hold | Sidney Edgerton (R) 53.3% J. L. Ranney (D) 46.7% | Ohio 19 | Edward Wade | Republican | 1852 | Re-elected | Edward Wade (R) 65.1% J. W. Gray (D) 34.9% | Ohio 20 | Joshua Reed Giddings | Republican | 1842 | Lost renomination Republican Hold | John Hutchins (R) 64.7% David Tod (D) 35.3%