Columns: State (class) | Vacator | Reason for change | Successor | Date of successors formal installation
Connecticut (1) | Nathan Smith ( AJ ) | Died December 6, 1835 | John M. Niles ( J ) | Appointed December 21, 1835, subsequently elected. | Illinois (3) | Elias Kane ( J ) | Died December 12, 1835 | William Lee D. Ewing ( J ) | Appointed December 30, 1835 | Virginia (1) | John Tyler ( AJ ) | Resigned February 29, 1836 | William C. Rives ( J ) | Elected March 4, 1836 | Maine (1) | Ether Shepley ( J ) | Resigned March 3, 1836 | Judah Dana ( J ) | Appointed December 7, 1836 | Delaware (1) | Arnold Naudain ( AJ ) | Resigned June 16, 1836 | Richard H. Bayard ( AJ ) | Elected June 17, 1836 | Virginia (2) | Benjamin W. Leigh ( AJ ) | Resigned July 4, 1836 | Richard E. Parker ( J ) | Elected December 12, 1836 | Arkansas (2) | New seats | Arkansas was admitted to the Union. | William S. Fulton (J) | Elected September 18, 1836 | Arkansas (3) | New seats | Arkansas was admitted to the Union. | Ambrose H. Sevier (J) | Elected September 18, 1836 | Maryland (3) | Robert H. Goldsborough ( AJ ) | Died October 5, 1836 | John S. Spence ( AJ ) | Elected December 31, 1836 | North Carolina (3) | Willie P. Mangum ( AJ ) | Resigned November 26, 1836 | Robert Strange ( J ) | Elected December 5, 1836 | Delaware (2) | John M. Clayton ( AJ ) | Resigned December 29, 1836 | Thomas Clayton ( AJ ) | Elected January 9, 1837 | Louisiana (3) | Alexander Porter ( AJ ) | Resigned January 5, 1837 due to ill health | Alexandre Mouton ( J ) | Elected January 12, 1837 | Michigan (1) | New seats | Michigan was admitted to the Union. | Lucius Lyon (J) | Elected January 26, 1837