Columns: State (class) | Vacator | Reason for change | Successor | Date of successors formal installation
Tennessee (2) | Vacant | Failure to elect | Spencer Jarnagin ( W ) | Elected October 17, 1843 | Maine (1) | Vacant | Rep Reuel Williams resigned in previous congress | John Fairfield ( D ) | Elected December 4, 1843 | Illinois (2) | Samuel McRoberts ( D ) | Died March 27, 1843 | James Semple ( D ) | Elected December 4, 1843 | Missouri (3) | Lewis F. Linn ( D ) | Died October 3, 1843 | David R. Atchison ( D ) | Elected December 14, 1843 | Rhode Island (1) | William Sprague ( D ) | Resigned January 17, 1844 | John B. Francis ( LO ) | Elected January 25, 1844 | Arkansas (2) | William S. Fulton ( D ) | Died August 15, 1844 | Chester Ashley ( D ) | Elected November 8, 1844 | New York (3) | Henry A. Foster ( D ) | Successor elected January 27, 1845 | John A. Dix ( D ) | Elected January 27, 1845 | South Carolina (2) | Daniel E. Huger ( D ) | Resigned March 3, 1845 | Vacant | Not filled this term | Florida (1) | Vacant | Florida admitted to the Union March 3, 1845 | Vacant | Not filled this term