| |- ! | Tilman B. Parks | | Democratic | 1920 | Incumbent re-elected. | nowrap | |} California |- ! | Clarence F. Lea | | Democratic | 1916 | Incumbent re-elected. | nowrap | |- ! | Harry Lane Englebright | | Republican | 1926 | Incumbent re-elected. | nowrap | |- ! | Charles F. Curry | | Republican | 1912 | Incumbent re-elected. | nowrap | |- ! | Florence Prag Kahn | | Republican | 1925 | Incumbent re-elected. | nowrap | |- ! | Richard J. Welch | | Republican | 1926 | Incumbent re-elected. | nowrap | |- ! | Albert E. Carter | | Republican | 1924 | Incumbent re-elected. | nowrap | |- ! | Henry E. Barbour | | Republican | 1918 | Incumbent re-elected. | nowrap | |- ! | Arthur M. Free | | Republican | 1920 | Incumbent re-elected. | nowrap | |- ! | William E. Evans | | Republican | 1926 | Incumbent re-elected. | nowrap | |- ! | Joe Crail | | Republican | 1926 | Incumbent re-elected. | nowrap | |- ! | Philip D. Swing | | Republican | 1920 | Incumbent re-elected. | nowrap | |} Colorado |- ! | S. Harrison White | | Democratic | 1927 | | Incumbent lost re-election.New member elected.Republican gain. | nowrap | |- ! | Charles Bateman Timberlake | | Republican | 1914 | Incumbent re-elected. | nowrap | |- ! | Guy Urban Hardy | | Republican | 1918 | Incumbent re-elected. | nowrap | |- ! | Edward Thomas Taylor | | Democratic | 1908 | Incumbent re-elected. | nowrap | |} Connecticut |- ! | E. Hart Fenn | | Republican | 1920 | Incumbent re-elected. | nowrap | |- ! | Richard P. Freeman | | Republican | 1914 | Incumbent re-elected. | nowrap | |- ! | John Q. Tilson | | Republican | 1914 | Incumbent re-elected. | nowrap | |- ! | Schuyler Merritt | | Republican | 1916 | Incumbent re-elected. | nowrap | |- ! | James P. Glynn | | Republican | 1924 | Incumbent re-elected. | nowrap | |} Delaware |- ! | Robert G. Houston | | Republican | 1924 | Incumbent re-elected. | nowrap | |} Florida |- ! | Herbert J. Drane | | Democratic | 1916 |