| Thomas Culbreth | | Democratic-Republican | 1816 | Incumbent re-elected. | nowrap | |- ! | Thomas Bayly | | Federalist | 1816 | Incumbent re-elected. | nowrap | |} Massachusetts Massachusetts elected its members November 2, 1818. Massachusetts's electoral law required a majority for election, n Massachusetts's electoral law required a majority for electionMassachusetts's electoral law required a majority for electionecessitating additional elections in five districts on April 5, 1819 and July 26, 1819. This was the last election in which the District of Maine — comprising congressional districts 14 through 20 — was part of Massachusetts. The District became the State of Maine during the 16th Congress. District numbers differed between source used and elsewhere on Wikipedia; district numbers used elsewhere on Wikipedia used here. |- ! | Jonathan Mason | | Federalist | 1817 | Incumbent re-elected. | nowrap | |- ! | Nathaniel Silsbee | | Democratic-Republican | 1816 | Incumbent re-elected. | nowrap | |- ! | Jeremiah Nelson | | Federalist | 18041806 1814 | Incumbent re-elected. | nowrap | |- ! | Timothy Fuller | | Democratic-Republican | 1816 | Incumbent re-elected. | nowrap | |- ! | Elijah H. Mills | | Federalist | 1814 | | Incumbent retired.New member elected.Federalist hold. | nowrap | |- ! | Samuel C. Allen | | Federalist | 1816 | Incumbent re-elected. | nowrap | |- ! | Henry Shaw | | Democratic-Republican | 1816 | Incumbent re-elected. | nowrap | |- ! | Zabdiel Sampson | | Democratic-Republican | 1816 | Incumbent re-elected. | nowrap | |- ! | Walter Folger Jr. | | Democratic-Republican | 1816 | Incumbent re-elected. | nowrap | |- ! | Marcus Morton | | Democratic-Republican | 1816 | Re-elected | nowrap | |- ! | Benjamin Adams | | Federalist | 1816 | Incumbent re-elected. | nowrap | |- ! | Solomon Strong | | Federalist | 1814 | | Incumbent retired.New member elected.Federalist hold. | nowrap | |- ! | Nathaniel Ruggles | | Federalist | 1812 | | Incumbent lost re-election.New member elected.Democratic-Republican gain. | nowrap | |- ! | John Holmes | | Democratic-Republican | 1816 | Incumbent re-elected. | nowrap | |- ! | Ezekiel Whitman | | Federalist | 18081810 1816 | Incumbent re-elected. | nowrap | |- ! | Benjamin Orr | | Federalist | 1816 | | Incumbent lost re-election.New