| 1813 1814 | | Incumbent resigned November 9, 1816.New member elected December 1816.Democratic-Republican hold.Successor seated January 23, 1817. | nowrap | |- ! | James Clark | | Democratic-Republican | 1812 | | Incumbent resigned April 8, 1816 when appointed circuit court judge.New member elected in 1816.Democratic-Republican hold.Successor seated December 2, 1816.Successor was not elected to the next term, see below. | nowrap | |- ! | Elijah Brigham | | Federalist | 1810 | | Incumbent died February 22, 1816.New member elected in 1816.Federalist-Republican hold.Successor seated December 2, 1816. | nowrap | |- ! | John Clopton | | Democratic-Republican | 17951799 1801 | | Incumbent died September 11, 1816New member elected in 1816.Democratic-Republican hold.Successor seated December 17, 1816. | nowrap | |} 15th Congress |- ! | David Scott | | Democratic-Republican | 1816 | Incumbent resigned to become president and judge of the court of common pleas.New member elected October 14, 1817.Democratic-Republican hold.Successor seated with the rest of the House December 1, 1817. | nowrap | |- ! rowspan=2 | 2 seats on a general ticket | Sylvanus Backus | | Federalist | 1816 | | Member-elect died February 15, 1817.New member elected in 1817.Federalist hold.Successor seated with the rest of the House December 1, 1817. | rowspan=2 nowrap | |- | Charles Dennison | | Federalist | 1816 | | Member-elect declined the seat.New member elected in 1817.Federalist hold.Successor seated with the rest of the House December 1, 1817. |- ! | Henry B. Lee | | Democratic-Republican | 1816 | | Member-elect died February 18, 1817.New member elected in 1817.Democratic-Republican hold.Successor seated with the rest of the House December 1, 1817. | nowrap | |- ! | John Scott | | Democratic-Republican | 1816 | Incumbent's re-election declared illegal and seat vacated since March 4, 1817.Incumbent re-elected in 1817.Successor seated August 4, 1817. | nowrap | |} Connecticut Connecticut elected its members September 16, 1816. |- ! rowspan=7 | | Benjamin Tallmadge | | Federalist | 1801 | | Incumbent retired.New member elected.Federalist hold.Successor (Backus) died February 15, 1817, leading to a special election. | rowspan=7 nowrap | |- | Epaphroditus Champion | | Federalist | 1806 | | Incumbent lost-relection.New member elected.Federalist hold. |- | Lewis B. Sturges | | Federalist | 1805 | | Incumbent lost-re-election.New member elected.Federalist hold.Successor (Dennison) declined to serve, leading to a special election. |- | Timothy Pitkin