| Democratic | 1924 | | Incumbent resigned to become Comptroller General.New member elected.Democratic hold. | nowrap | |- ! | John H. Kerr | | Democratic | 1923 | Incumbent re-elected. | nowrap | |- ! | Graham Arthur Barden | | Democratic | 1934 | Incumbent re-elected. | nowrap | |- ! | Harold D. Cooley | | Democratic | 1934 | Incumbent re-elected. | nowrap | |- ! | Alonzo Dillard Folger | | Democratic | 1938 | Incumbent re-elected. | nowrap | |- ! | Carl T. Durham | | Democratic | 1938 | Incumbent re-elected. | nowrap | |- ! | J. Bayard Clark | | Democratic | 1928 | Incumbent re-elected. | nowrap | |- ! | William O. Burgin | | Democratic | 1938 | Incumbent re-elected. | nowrap | |- ! | Robert L. Doughton | | Democratic | 1910 | Incumbent re-elected. | nowrap | |- ! | Alfred L. Bulwinkle | | Democratic | 1930 | Incumbent re-elected. | nowrap | |- ! | Zebulon Weaver | | Democratic | 1930 | Incumbent re-elected. | nowrap | |} North Dakota |- ! | Usher L. Burdick | | Republican | 1934 | Incumbent re-elected. | rowspan=2 nowrap | |- ! | William Lemke | | Republican | 1932 | | Incumbent retired to run for U.S. senator.New member elected.Republican hold. |} Ohio |- ! | Charles H. Elston | | Republican | 1938 | Incumbent re-elected. | nowrap | |- ! | William E. Hess | | Republican | 1938 | Incumbent re-elected. | nowrap | |- ! | Harry N. Routzohn | | Republican | 1938 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | Robert Franklin Jones | | Republican | 1938 | Incumbent re-elected. | nowrap | |- ! | Cliff Clevenger | | Republican | 1938 | Incumbent re-elected. | nowrap | |- ! | James G. Polk | | Democratic | 1930 | | Incumbent retired.New member elected.Democratic hold. | nowrap | |- ! | Clarence J. Brown | | Republican | 1938 | Incumbent re-elected. | nowrap | |- ! | Frederick C. Smith | | Republican | 1938 | Incumbent re-elected. | nowrap | |- ! | John F. Hunter | | Democratic | 1936 | Incumbent re-elected. | nowrap | |- ! | Thomas A. Jenkins |