Incumbent re-elected. | nowrap | |- ! | John Quincy Adams | | Whig | 1830 | Incumbent re-elected. | nowrap | |- ! |- ! |} Michigan Elections were held November 3, 1846. |- ! | Robert McClelland | | 1843 | Incumbent re-elected. | nowrap | |- ! | John S. Chipman | | 1844 | | Incumbent retired.New member elected.Democratic hold. | nowrap | |- ! | James B. Hunt | | 1843 | | Incumbent retired.New member elected.Democratic hold. | nowrap | |} Mississippi Elections were held November 1–2, 1847, after the March 4, 1847 beginning of the term, but before the House first convened in December 1847. |- ! | Jacob Thompson | | Democratic | 1839 | | Incumbent redistricted from the .Democratic hold. | nowrap | |- ! | colspan=3 | None (new district) | | New member elected.Democratic gain. | nowrap | |- ! | Robert W. Roberts | | Democratic | 1843 | | Incumbent redistricted from the .New member elected.Whig gain. | nowrap | |- ! | colspan=3 | None (new district) | | New member elected.Democratic gain. | nowrap | |} Missouri Elections were held August 2, 1846. All five seats remained Democratic. Three of the members retired. |- ! | James B. Bowlin | | Democratic | 1842 | Incumbent re-elected. | nowrap | |- ! rowspan=2 | | William McDaniel | | Democratic | 1846 | | Incumbent retired.New member elected.Democratic hold. | rowspan=2 nowrap | |- | James Hugh Relfe | | Democratic | 1842 | | Incumbent retired.Democratic loss. |- ! | colspan=3 | New district | | New seat.New member elected.Democratic gain. | nowrap | |- ! | colspan=3 | New district | | New seat.New member elected.Democratic gain. | nowrap | |- ! rowspan=2 | | John S. Phelps | | Democratic | 1844 | Incumbent re-elected. | rowspan=2 nowrap | |- | Leonard H. Sims | | Democratic | 1844 | | Incumbent retired.Democratic loss. |} New Hampshire Elections were held March 9, 1847, after the March 4, 1847 beginning of the term, but before the House first convened in December 1847. Two of the districts had run-off elections in July 1847. |- ! | colspan=3 | Vacant seat due to the failure to elect. | | New member elected on the second ballot.Independent gain. | nowrap | |- ! | Moses