18141815 (Seat declared vacant)1815 | Incumbent re-elected. | nowrap | |- ! | Richard M. Johnson | | Democratic-Republican | 1806 | | Incumbent retired.New member elected.Democratic-Republican hold. | nowrap | |- ! | Joseph Desha | | Democratic-Republican | 1806 | | Incumbent lost re-election.New member elected.Democratic-Republican hold. | nowrap | |- ! | Anthony New | | Democratic-Republican | 18101814 1816 | | Incumbent retired.New member elected.Democratic-Republican hold. | nowrap | |- ! | David Walker | | Democratic-Republican | 1816 | Incumbent re-elected. | nowrap | |- ! | George Robertson | | Democratic-Republican | 1816 | Incumbent re-elected. | nowrap | |- ! | Richard C. Anderson Jr. | | Democratic-Republican | 1816 | Incumbent re-elected. | nowrap | |- ! | Tunstall Quarles | | Democratic-Republican | 1816 | Incumbent re-elected. | nowrap | |- ! | Thomas Speed | | Democratic-Republican | 1816 | | Incumbent retired.New member elected.Democratic-Republican hold. | nowrap | |} Louisiana Louisiana elected its member July 6–8, 1818. Louisiana held an election for the 16th Congress at the same time that it held a special election to finish the 15th Congress. Data were only available for the special election, but the general election would presumably have had very similar results, and so the results for the special election are duplicated here. |- ! | Thomas B. Robertson | | Democratic-Republican | 1812 | | Incumbent resigned April 20, 1818.New member elected.Democratic-Republican hold.Successor elected the same day to finish the current term, see above. | nowrap | |} Maryland Maryland elected its members October 5, 1818. |- ! | Philip Stuart | | Federalist | 1810 | | Incumbent retired.New member elected.Federalist hold. | nowrap | |- ! | John C. Herbert | | Federalist | 1814 | | Incumbent retired.New member elected.Democratic-Republican gain. | nowrap | |- ! | George Peter | | Federalist | 1816 | | Incumbent lost re-election.New member elected.Federalist hold. | nowrap | |- ! | Samuel Ringgold | | Democratic-Republican | 18101814 1816 | Incumbent re-elected. | nowrap | |- ! rowspan=2 | | Samuel Smith | | Democratic-Republican | 17921803 1816 | Incumbent re-elected. | rowspan=2 nowrap | |- | Peter Little | | Democratic-Republican | 18101812 1816 | Incumbent re-elected. |- ! | Philip Reed | | Democratic-Republican | 1816 | | Incumbent lost re-election.New member elected.Democratic-Republican hold. | nowrap | |- !