| |- ! | Thomas Blount | | Democratic-Republican | 17931798 18041808 (Lost)1810 | | Incumbent died February 7, 1812.New member elected January 11, 1813.Democratic-Republican hold.Successor seated January 30, 1813.Successor later re-elected, see below. | nowrap | |} 13th Congress |- ! | John Smilie | | Democratic-Republican | 17921794 1798 | | Incumbent/member-elect died December 30, 1812.New member elected February 16, 1813.Democratic-Republican hold.Successor seated May 24, 1813. | nowrap | |- ! | John S. Edwards | | Federalist | 1812 | | Member-elect died February 22, 1813.New member elected April 20, 1813.Democratic-Republican gain.Successor seated June 8, 1813. | nowrap | |- ! | William Dowse | | Federalist | 1812 | | Member-elect died February 18, 1813.New member elected April 27–29, 1813.Federalist hold.Successor seated June 21, 1813.Election was later successfully challenged by Isaac Williams Jr. (Democratic-Republican). | nowrap | |- ! | John Simpson | | Democratic-Republican | 1812 | | Member-elect died January 22, 1813.New member elected April 29, 1813.Democratic-Republican hold.Successor seated May 28, 1813. | nowrap | |- ! | Abner Lacock | | Democratic-Republican | 1810 | | Incumbent/member-elect resigned March 3, 1813, to become U.S. Senator.New member elected May 4, 1813.Democratic-Republican hold.Successor seated May 28, 1813. | nowrap | |- ! | Duncan McArthur | | Democratic-Republican | 1812 | | Member-elect resigned April 5, 1813, to stay in the state militia.New member elected May 10, 1813.Democratic-Republican hold.Successor seated June 15, 1813. | nowrap | |- ! | Robert Whitehill | | Democratic-Republican | 1805 | | Member-elect died April 8, 1813.New member elected May 11, 1813.Democratic-Republican hold.Successor seated May 28, 1813. | nowrap | |- ! | John Gloninger | | Federalist | 1812 | | Incumbent resigned August 2, 1813.New member elected October 12, 1813.Democratic-Republican gain.Successor seated December 6, 1813. | nowrap | |- ! | John M. Hyneman | | Democratic-Republican | 1810 | | Incumbent resigned August 2, 1813.New member elected October 12, 1813.Democratic-Republican hold.Successor seated December 6, 1813. | nowrap | |- ! | William W. Bibb | | Democratic-Republican | 1806 | | Incumbent resigned after election as U.S. Senator.New member elected December 13, 1813.Democratic-Republican hold.Successor seated February 7, 1814. | nowrap | |- ! | Egbert Benson | | Federalist | 17891793 1812 | | Incumbent resigned August 2, 1813.New member elected December 28–30, 1813.Democratic-Republican gain.Successor seated January 22, 1814. | nowrap | |} Connecticut Connecticut elected