Daniel E. Somes | | Republican | 1858 | | Incumbent retired.New member elected.Republican hold. | nowrap | |- ! | John J. Perry | | Republican | 1854 | | Incumbent retired.New member elected.Republican hold. | nowrap | |- ! | Ezra B. French | | Republican | 1858 | | Incumbent retired.New member elected.Republican hold. | nowrap | |- ! | Freeman H. Morse | | Republican | 1856 | | Incumbent retired.New member elected.Republican hold. | nowrap | |- ! | Israel Washburn Jr. | | Republican | 1850 | | Incumbent retired to run for Governor of Maine.New member elected.Republican hold. | nowrap | |- ! | Stephen C. Foster | | Republican | 1856 | | Incumbent retired.New member elected.Republican hold. | nowrap | |} Maryland Maryland elected its members on June 13, 1861, after the new term began but before Congress convened. |- ! | James A. Stewart | | Democratic | 1855 | | Incumbent retired.New member elected.Unionist gain. | nowrap | |- ! | Edwin H. Webster | | Know Nothing | 1859 | | Incumbent re-elected in a new party.Unionist gain. | nowrap | |- ! | James M. Harris | | Know Nothing | 1855 | | Incumbent retired.New member elected.Unionist gain. | nowrap | |- ! | Henry W. Davis | | Know Nothing | 1855 | | Incumbent lost re-election.New member elected.Unionist gain. | nowrap | |- ! | Jacob M. Kunkel | | Democratic | 1857 | | Incumbent retired.New member elected.Unionist gain. | nowrap | |- ! | George W. Hughes | | Democratic | 1859 | | Incumbent retired.New member elected.Unionist gain. | nowrap | |} Massachusetts Massachusetts elected its members on November 6, 1860 Election Day. |- ! | Thomas D. Eliot | | Republican | 1858 | Incumbent re-elected. | nowrap | |- ! | James Buffington | | Republican | 1854 | Incumbent re-elected. | nowrap | |- ! | Charles Francis Adams Sr. | | Republican | 1858 | Incumbent re-elected. | nowrap | |- ! | Alexander H. Rice | | Republican | 1858 | Incumbent re-elected. | nowrap | |- ! | Anson Burlingame | | Republican | 1854 | | Incumbent lost re-election.New member elected.Constitutional Union gain. | nowrap | |- ! | John B. Alley | | Republican | 1858 | Incumbent re-elected. | nowrap | |-