hold. | nowrap | |- ! | Josiah Dean | | Democratic-Republican | 1806 | | Lost re-electionFederalist gain. | nowrap | |- ! | Jabez Upham | | Federalist | 1806 | Incumbent re-elected. | nowrap | |- ! | William Stedman | | Federalist | 1803 | Incumbent re-elected. | nowrap | |- ! | Ezekiel Bacon | | Democratic-Republican | 1807 | Incumbent re-elected. | nowrap | |- ! | Ebenezer Seaver | | Democratic-Republican | 1803 | Incumbent re-elected. | nowrap | |- ! | Richard Cutts | | Democratic-Republican | 1801 | Incumbent re-elected. | nowrap | |- ! | Daniel Ilsley | | Democratic-Republican | 1804 | | Lost re-electionFederalist gain. | nowrap | |- ! | Orchard Cook | | Democratic-Republican | 1804 | Incumbent re-elected. | nowrap | |- ! | John Chandler | | Democratic-Republican | 1804 | | Incumbent retired.New member elected.Democratic-Republican hold. | nowrap | |} Mississippi Territory See Non-voting delegates, below. New Hampshire |- ! rowspan=5 | | Peter Carleton | | Democratic-Republican | 1806 | | Incumbent retired.New member elected.Federalist gain. | nowrap rowspan=5 | : |- | Daniel M. Durell | | Democratic-Republican | 1806 | | Lost re-election.New member elected.Federalist gain. |- | Francis Gardner | | Democratic-Republican | 1806 | | Lost re-election.New member elected.Federalist gain. |- | Jedediah K. Smith | | Democratic-Republican | 1806 | | Lost re-election.New member elected.Federalist gain. |- | Clement Storer | | Democratic-Republican | 1806 | | Lost re-election.New member elected.Federalist gain. |} New Jersey |- ! rowspan=6 | | Adam Boyd | | Democratic-Republican | 1808 | Incumbent re-elected. | rowspan=6 nowrap | : |- | Thomas Newbold | | Democratic-Republican | 1806 | Incumbent re-elected. |- | William Helms | | Democratic-Republican | 1800 | Incumbent re-elected. |- | John Lambert | | Democratic-Republican | 1804 | | Incumbent retired.New member elected.Democratic-Republican hold. |- | Henry Southard | | Democratic-Republican | 1800 | Incumbent re-elected. |- | James Sloan | | Democratic-Republican | 1803 | | Incumbent retired.New member elected.Democratic-Republican hold. |} New York Between the 1806 and 1808 elections, New York went through a redistricting that reduced the number of districts to 15 by creating two plural districts with two seats each. This brought the state's 17-seat delegation from a 15-2 ratio favoring Democratic-Republicans to a nearly-even 9-8 split in their favor. |- !