Democratic-Republican | 1818 | | Incumbent retired.New member elected.Democratic-Republican hold. | rowspan=7 nowrap | |- | Jonathan O. Moseley | | Democratic-Republican | 1804 | | Incumbent retired.New member elected.Democratic-Republican hold. |- | Gideon Tomlinson | | Democratic-Republican | 1818 | Incumbent re-elected. |- | Elisha Phelps | | Democratic-Republican | 1818 | | Incumbent lost re-election.New member elected.Democratic-Republican hold. |- | John Russ | | Democratic-Republican | 1818 | Incumbent re-elected. |- | Henry W. Edwards | | Democratic-Republican | 1818 | Incumbent re-elected. |- | Samuel A. Foot | | Democratic-Republican | 1818 | | Incumbent lost re-election.New member elected.Democratic-Republican hold. |} Delaware Delaware elected its members October 3, 1820. |- ! rowspan=2 | | Louis McLane | | Federalist | 1816 | Incumbent re-elected. | rowspan=2 nowrap | |- | Willard Hall | | Democratic-Republican | 1816 | | Incumbent lost re-election.New member elected.Democratic-Republican hold. |} Georgia Georgia elected its members October 2, 1820. |- ! rowspan=6 | | Robert R. Reid | | Democratic-Republican | 1819 | Incumbent re-elected. | rowspan=6 nowrap | |- | Joel Crawford | | Democratic-Republican | 1816 | | Incumbent retired.New member elected.Democratic-Republican hold. |- | Joel Abbot | | Democratic-Republican | 1816 | Incumbent re-elected. |- | John A. Cuthbert | | Democratic-Republican | 1818 | | Incumbent retired.New member elected.Democratic-Republican hold. |- | William Terrell | | Democratic-Republican | 1816 | | Incumbent retired.New member elected.Democratic-Republican hold. |- | Thomas W. Cobb | | Democratic-Republican | 1818 | | Incumbent lost re-election.New member elected.Democratic-Republican hold. |} Illinois Illinois elected its member August 7, 1820. |- ! | Daniel P. Cook | | Democratic-Republican | 1819 | Incumbent re-elected. | nowrap | |} Indiana Indiana elected its member August 7, 1820. |- ! | William Hendricks | | Democratic-Republican | 1817 | Incumbent re-elected. | nowrap | |} Kentucky Kentucky elected its members August 7, 1820. |- ! | David Trimble | | Democratic-Republican | 1816 | Incumbent re-elected. | nowrap | |- ! | Henry Clay | | Democratic-Republican | 18101814 18141815 (Seat declared vacant)1815 | | Incumbent retired.New member elected.Democratic-Republican hold. | nowrap | |- ! | William Brown | | Democratic-Republican | 1818 | | Incumbent retired.New member elected.Democratic-Republican hold. | nowrap | |- ! | Thomas Metcalfe | | Democratic-Republican | 1818 | Incumbent re-elected. | nowrap | |- ! | Alney McLean | | Democratic-Republican