| | Democratic | 1912 | | Incumbent lost renomination.New member elected. Democratic hold. | |- ! | Lewis L. Morgan | | Democratic | 1912 | Incumbent re-elected. | |- ! | Ladislas Lazaro | | Democratic | 1912 | Incumbent re-elected | |- ! | James B. Aswell | | Democratic | 1912 | Incumbent re-elected | |} Maine |- ! | Asher C. Hinds | | Republican | 1910 | Incumbent re-elected. | |- ! | Daniel J. McGillicuddy | | Democratic | 1892 | Incumbent re-elected. | |- ! | John A. Peters | | Republican | 1913 | Incumbent re-elected. | |- ! | Frank E. Guernsey | | Republican | 1908 | Incumbent re-elected. | |} Maryland |- ! | colspan=3 | Vacant | | Rep. James Harry Covington (D) resigned September 30, 1914, to become Chief Justice of the Supreme Court of the District of Columbia.New member elected.Democratic hold. | nowrap | |- ! | J. Frederick C. Talbott | | Democratic | 1902 | Incumbent re-elected. | nowrap | |- ! | Charles Pearce Coady | | Democratic | 1913 | Incumbent re-elected. | nowrap | |- ! | John Charles Linthicum | | Democratic | 1910 | Incumbent re-elected. | nowrap | |- ! | Frank Owens Smith | | Democratic | 1912 | | Incumbent lost renomination.New member elected.Republican gain. | nowrap | |- ! | David John Lewis | | Republican | 1910 | Incumbent re-elected. | nowrap | |} Massachusetts |- ! | Allen T. Treadway | | Republican | 1912 | Incumbent re-elected. | nowrap | |- ! | Frederick H. Gillett | | Republican | 1892 | Incumbent re-elected. | nowrap | |- ! | Calvin Paige | | Republican | 1913 | Incumbent re-elected. | nowrap | |- ! | Samuel E. Winslow | | Republican | 1912 | Incumbent re-elected. | nowrap | |- ! | Butler Ames | | Republican | 1912 | Incumbent re-elected. | nowrap | |- ! | Augustus Peabody Gardner | | Republican | 1902 | Incumbent re-elected. | nowrap | |- ! | Michael F. Phelan | | Democratic | 1912 | Incumbent re-elected. | nowrap | |- ! | Frederick S. Deitrick | | Democratic | 1912 | Incumbent re-elected. | nowrap | |- ! | Ernest W. Roberts | | Republican | 1898 | Incumbent re-elected.