re-elected. | nowrap | |- ! | Charles H. Morgan | | Democratic | 1874 | | Lost re-nominationDemocratic hold. | nowrap | |- ! | Thomas T. Crittenden | | Democratic | 1876 | | Incumbent retired.New member elected.Democratic hold. | nowrap | |- ! | Benjamin J. Franklin | | Democratic | 1874 | | Incumbent retired.New member elected.Independent Democratic gain. | nowrap | |- ! | David Rea | | Democratic | 1874 | | Incumbent lost re-election.New member elected.Greenback gain. | nowrap | |- ! | Henry M. Pollard | | Republican | 1876 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | John B. Clark Jr. | | Democratic | 1872 | Incumbent re-elected. | nowrap | |- ! | John M. Glover | | Democratic | 1872 | | Lost re-nominationDemocratic hold. | nowrap | |- ! | Aylett H. Buckner | | Democratic | 1872 | | Lost re-nominationDemocratic hold. | nowrap | |} Nebraska |- ! | colspan=3 | Vacant due to Welch's death | | Incumbent died September 4, 1878.New member elected.Republican hold. | nowrap | |} Nevada |- ! | Thomas Wren | | Republican | 1876 | | Incumbent retired.New member elected.Republican hold. | nowrap | |} New Hampshire |- ! | Frank Jones | | Democratic | 1875 | | Incumbent retired.New member elected.Republican gain. | nowrap | |- ! | James F. Briggs | | Republican | 1877 | Incumbent re-elected. | nowrap | |- ! | Henry W. Blair | | Republican | 1877 | | Elected to the U.S. SenateRepublican hold. | nowrap | |} New Jersey |- ! | Clement H. Sinnickson | | Republican | 1874 | | Incumbent retired.New member elected.Republican hold. | nowrap | |- ! | John H. Pugh | | Republican | 1876 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | Miles Ross | | Democratic | 1874 | Incumbent re-elected. | nowrap | |- ! | Alvah A. Clark | | Democratic | 1876 | Incumbent re-elected. | nowrap | |- ! | Augustus W. Cutler | | Democratic | 1874 | | Incumbent retired.New member elected.Republican gain. | nowrap | |- ! | Thomas B. Peddie | | Republican | 1876 | | Incumbent retired.New member elected.Republican hold. | nowrap | |- ! | Augustus A.