nowrap | |- ! | Samuel W. Gould | | Democratic | 1908 | | Incumbent lost re-election.New member elected.Republican gain. | nowrap | |- ! | Frank E. Guernsey | | Republican | 1908 | Incumbent re-elected. | nowrap | |} Maryland |- ! | James Harry Covington | | Democratic | 1908 | Incumbent re-elected. | nowrap | |- ! | J. Frederick C. Talbott | | Democratic | 1902 | Incumbent re-elected. | nowrap | |- ! | George Konig | | Democratic | 1910 | Incumbent re-elected. | nowrap | |- ! | John Charles Linthicum | | Democratic | 1910 | Incumbent re-elected. | nowrap | |- ! | Thomas Parran | | Republican | 1910 | | Incumbent lost re-election. New member elected. Democratic gain. | nowrap | |- ! | David John Lewis | } | Democratic | 1910 | Incumbent re-elected. | nowrap | |} Massachusetts |- ! | George P. Lawrence | | Republican | 1897 (special) | | Incumbent retired.New member elected.Republican hold. | nowrap | |- ! | Frederick H. Gillett | | Republican | 1892 | Incumbent re-elected. | nowrap | |- ! | William Wilder | | Republican | 1910 | Incumbent re-elected. | nowrap | |- ! | John A. Thayer | | Democratic | 1910 | | Incumbent lost re-election.New member elected.Republican gain. | nowrap | |- ! | Butler Ames | | Republican | 1902 | | Incumbent retired.New member elected.Republican hold. | nowrap | |- ! | Augustus Peabody Gardner | | Republican | 1902 (special) | Incumbent re-elected. | nowrap | |- ! | colspan="3" | New district | | New seat.New member elected.Democratic gain. | nowrap | |- ! | Samuel W. McCall | | Republican | 1892 | | Incumbent retired.New member elected.Democratic gain. | nowrap | |- ! | Ernest W. Roberts | | Republican | 1898 | Incumbent re-elected. | nowrap | |- ! | William Francis Murray | | Democratic | 1910 | Incumbent re-elected. | nowrap | |- ! | Andrew James Peters | | Democratic | 1906 | Incumbent re-elected. | nowrap | |- ! | James Michael Curley | | Democratic | 1910 | Incumbent re-elected. | nowrap | |- ! | John W. Weeks | | Republican | 1904 | Incumbent re-elected. | nowrap | |- ! | Robert O. Harris | |