member elected.Republican gain. | nowrap | |- ! | Daniel L. Russell | | Greenback | 1878 | | Incumbent retired.New member elected.Democratic gain. | nowrap | |- ! | Joseph J. Davis | | 1874 | | Incumbent retired.New member elected.Democratic hold. | nowrap | |- ! | Alfred M. Scales | | 1874 | Incumbent re-elected. | nowrap | |- ! | Walter L. Steele | | 1876 | | Incumbent retired.New member elected.Democratic hold. | nowrap | |- ! | Robert F. Armfield | | 1878 | Incumbent re-elected. | nowrap | |- ! | Robert B. Vance | | 1872 | Incumbent re-elected. | nowrap | |} Ohio Ohio held elections for its twenty members on October 12, 1880. |- ! | Benjamin Butterworth | | 1878 | Incumbent re-elected. | nowrap | |- ! | Thomas L. Young | | 1878 | Incumbent re-elected. | nowrap | |- ! | William D. Hill | | 1878 | | Incumbent retired.New member elected.Republican gain. | nowrap | |- ! | John A. McMahon | | 1874 | | Incumbent lost re-election.New member elected.Republican gain. | nowrap | |- ! | Benjamin Le Fevre | | 1878 | Incumbent re-elected. | nowrap | |- ! | Frank H. Hurd | | 1878 | | Incumbent lost re-election.New member elected.Republican gain. | nowrap | |- ! | Ebenezer B. Finley | | 1878 | | Incumbent retired.New member elected.Democratic hold. | nowrap | |- ! | J. Warren Keifer | | 1876 | Incumbent re-elected. | nowrap | |- ! | Henry L. Dickey | | 1878 | | Incumbent retired.New member elected.Republican gain. | nowrap | |- ! | Thomas Ewing Jr. | | 1876 | | Incumbent retired.New member elected.Republican gain. | nowrap | |- ! | Henry S. Neal | | 1876 | Incumbent re-elected. | nowrap | |- ! | George L. Converse | | 1878 | Incumbent re-elected. | nowrap | |- ! | Gibson Atherton | | 1878 | Incumbent re-elected. | nowrap | |- ! | George W. Geddes | | 1878 | Incumbent re-elected. | nowrap | |- ! | Adoniram J. Warner | | 1878 | | Incumbent lost re-election.New member elected.Republican gain. | nowrap | |- ! | Jonathan T. Updegraff | | 1878 | Incumbent re-elected. | nowrap | |- ! | William McKinley | | 1876