Democratic | 1902 | Incumbent re-elected. | nowrap | |- ! | William S. McNary | | Democratic | 1902 | Incumbent re-elected. | nowrap | |- ! | John Andrew Sullivan | | Democratic | 1902 | Incumbent re-elected. | nowrap | |- ! | Samuel L. Powers | | Republican | 1900 | | Incumbent retired.New member elected.Republican hold. | nowrap | |- ! | William S. Greene | | Republican | 1898 (special) | Incumbent re-elected. | nowrap | |- ! | William C. Lovering | | Republican | 1896 | Incumbent re-elected. | nowrap | |} Michigan Minnesota Mississippi |- ! | Ezekiel S. Candler Jr. | | Democratic | 1900 | Incumbent re-elected. | nowrap | |- ! | Thomas Spight | | Democratic | 1898 (special) | Incumbent re-elected. | nowrap | |- ! | Benjamin G. Humphreys II | | Democratic | 1902 | Incumbent re-elected. | nowrap | |- ! | Wilson S. Hill | | Democratic | 1902 | Incumbent re-elected. | nowrap | |- ! | Adam M. Byrd | | Democratic | 1902 | Incumbent re-elected. | nowrap | |- ! | Eaton J. Bowers | | Democratic | 1902 | Incumbent re-elected. | nowrap | |- ! | Frank A. McLain | | Democratic | 1898 (special) | Incumbent re-elected. | nowrap | |- ! | John S. Williams | | Democratic | 1892 | Incumbent re-elected. | nowrap | |} Missouri Montana |- ! | Joseph M. Dixon | | Republican | 1902 | Incumbent re-elected. | nowrap | |} Nebraska |- ! | Elmer Burkett | | Republican | 1898 | Incumbent re-elected.Resigned before start of term to become Senator. | nowrap | |- ! | Gilbert Hitchcock | | Democratic | 1902 | | Incumbent lost re-election.New member elected.Republican gain. | nowrap | |- ! | John McCarthy | | Republican | 1902 | Incumbent re-elected. | nowrap | |- ! | Edmund H. Hinshaw | | Republican | 1902 | Incumbent re-elected. | nowrap | |- ! | George W. Norris | | Republican | 1902 | Incumbent re-elected. | nowrap | |- ! | Moses Kinkaid | | Republican | 1902 | Incumbent re-elected. | nowrap | |} Nevada New Hampshire New Jersey New York North Carolina North Dakota |- ! rowspan=2 | | Thomas F. Marshall | | Republican | nowrap |