| 1804 | | Incumbent retired.New member elected.Democratic-Republican hold. |- | Thomas Spalding | | Democratic-Republican | 1805 | | Incumbent lost re-election.New member elected.Democratic-Republican hold.Incumbent then resigned sometime in 1806, leading to a special election, see above. |- | Peter Early | | Democratic-Republican | 1804 | | Incumbent retired.New member elected.Democratic-Republican hold. |} Indiana Territory See Non-voting delegates, below. Kentucky Kentucky elected its members August 4, 1806. |- ! | Matthew Lyon | | Democratic-Republican | 1797 1803 | Incumbent re-elected. | nowrap | |- ! | John Boyle | | Democratic-Republican | 1803 | Incumbent re-elected. | nowrap | |- ! | Matthew Walton | | Democratic-Republican | 1803 | | Incumbent retired.New member elected.Democratic-Republican hold. | nowrap | |- ! | Thomas Sandford | | Democratic-Republican | 1803 | | Incumbent lost re-election.New member elected.Democratic-Republican hold. | nowrap | |- ! | John Fowler | | Democratic-Republican | 1797 | | Incumbent retired.New member elected.Democratic-Republican hold. | nowrap | |- ! | George M. Bedinger | | Democratic-Republican | 1803 | | Incumbent retired.New member elected.Democratic-Republican hold. | nowrap | |} Maryland Maryland elected its members October 6, 1806. |- ! | John Campbell | | Federalist | 1801 | Incumbent re-elected. | nowrap | |- ! | Leonard Covington | | Democratic-Republican | 1804 | | Incumbent lost re-election.New member elected.Democratic-Republican hold. | nowrap | |- ! | Patrick Magruder | | Democratic-Republican | 1801 | | Incumbent lost re-election.New member elected.Federalist gain. | nowrap | |- ! | Roger Nelson | | Democratic-Republican | 1804 | Incumbent re-elected. | nowrap | |- ! rowspan=2 | | Nicholas R. Moore | | Democratic-Republican | 1803 | Incumbent re-elected. | rowspan=2 nowrap | |- | William McCreery | | Democratic-Republican | 1803 | Incumbent re-elected. |- ! | John Archer | | Democratic-Republican | 1801 | | Incumbent lost re-election.New member elected.Democratic-Republican hold. | nowrap | |- ! | Joseph H. Nicholson | | Democratic-Republican | 1798 | | Incumbent resigned March 1, 1806.Democratic-Republican hold.Successor had also been elected to finish the current term, see above. | nowrap | |- ! | Charles Goldsborough | | Federalist | 1804 | Incumbent re-elected. | nowrap | |} Massachusetts Massachusetts elected its members November 3, 1806. |- ! | Josiah Quincy | | Federalist | 1804 | Incumbent re-elected. | nowrap | |- ! | Jacob Crowninshield |