gain. | nowrap | |- ! | Chauncey L. Knapp | | Know Nothing | 1854 | | Incumbent re-elected to a new party.Republican gain. | nowrap | |- ! | Alexander DeWitt | | Know Nothing | 1852 | | Incumbent lost re-election.New member elected.Republican gain. | nowrap | |- ! | Calvin C. Chaffee | | Know Nothing | 1855 (special) | | Incumbent re-elected to a new party.Republican gain. | nowrap | |- ! | Mark Trafton | | Know Nothing | 1854 | | Incumbent lost re-election.New member elected.Republican gain. | nowrap | |} Michigan |- ! | William A. Howard | | 1854 | Incumbent re-elected. | nowrap | |- ! | Henry Waldron | | 1854 | Incumbent re-elected. | nowrap | |- ! | David S. Walbridge | | 1854 | Incumbent re-elected. | nowrap | |- ! | George W. Peck | | 1854 | | Incumbent lost re-election.New member elected.Republican gain. | nowrap | |} Minnesota Minnesota Territory elected three members in advance of Minnesota's 1848 statehood. "Although three men won this election, which was held before Minnesota was actually a state, only two representatives from Minnesota were allowed in the congressional bill creating the state in 1858. George L. Becker lost in the drawing of lots to decide who would present their credentials, therefore he did not serve in Congress." |- ! rowspan=2 | | colspan=3 | None | | New state would be admitted May 11, 1858.New member elected.Democratic gain. | rowspan=2 nowrap | |- | colspan=3 | None | | New state would be admitted May 11, 1858.New member elected.Democratic gain. |} Mississippi Elections held late, from October 5 to 6, 1857. |- ! | Daniel B. Wright | | Democratic | 1853 | | Incumbent retired.New member elected.Democratic hold. | nowrap | |- ! | Hendley S. Bennett | | Democratic | 1855 | | Incumbent lost renomination.New member elected.Democratic hold. | nowrap | |- ! | William Barksdale | | Democratic | 1853 | Incumbent re-elected. | nowrap | |- ! | William A. Lake | | Know Nothing | 1855 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | John A. Quitman | | Democratic | 1855 | Incumbent re-elected. | nowrap | |} Missouri |- ! |- ! |- ! |- ! |- ! |- ! |- ! |}