state (class)                     vacator                                reason for change                   successor date of successors formal installation
0       tennessee (1)                      vacant                                  vacancy in term        andrew johnson ( d )                       october 8 , 1857
1  south carolina (3)         andrew butler ( d )                               died may 25 , 1857       james h hammond ( d )                      december 7 , 1857
2   new hampshire (3)            james bell ( r )                               died may 26 , 1857          daniel clark ( r )                         june 27 , 1857
3           texas (1)         thomas j rusk ( d )                              died july 29 , 1857  j pinckney henderson ( d )                      november 9 , 1857
4  south carolina (2)        josiah j evans ( d )                                died may 6 , 1858        arthur p hayne ( d )                          may 11 , 1858
5       minnesota (1)                    new seat    minnesota admitted to the union may 11 , 1858          henry m rice ( d )                          may 11 , 1858
6       minnesota (2)                    new seat    minnesota admitted to the union may 11 , 1858         james shields ( d )                          may 11 , 1858
7           texas (1)  j pinckney henderson ( d )                               died june 4 , 1858         matthias ward ( d )                    september 27 , 1858
8  south carolina (2)        arthur p hayne ( d )              successor elected december 2 , 1858    james chesnut , jr ( d )                      december 3 , 1858
9          oregon (2)                    new seat  oregon admitted to the union february 14 , 1859         delazon smith ( d )                     february 14 , 1859

Table as JSON:
{"state (class)":{"0":"tennessee (1)","1":"south carolina (3)","2":"new hampshire (3)","3":"texas (1)","4":"south carolina (2)","5":"minnesota (1)","6":"minnesota (2)","7":"texas (1)","8":"south carolina (2)","9":"oregon (2)"},"vacator":{"0":"vacant","1":"andrew butler ( d )","2":"james bell ( r )","3":"thomas j rusk ( d )","4":"josiah j evans ( d )","5":"new seat","6":"new seat","7":"j pinckney henderson ( d )","8":"arthur p hayne ( d )","9":"new seat"},"reason for change":{"0":"vacancy in term","1":"died may 25 , 1857","2":"died may 26 , 1857","3":"died july 29 , 1857","4":"died may 6 , 1858","5":"minnesota admitted to the union may 11 , 1858","6":"minnesota admitted to the union may 11 , 1858","7":"died june 4 , 1858","8":"successor elected december 2 , 1858","9":"oregon admitted to the union february 14 , 1859"},"successor":{"0":"andrew johnson ( d )","1":"james h hammond ( d )","2":"daniel clark ( r )","3":"j pinckney henderson ( d )","4":"arthur p hayne ( d )","5":"henry m rice ( d )","6":"james shields ( d )","7":"matthias ward ( d )","8":"james chesnut , jr ( d )","9":"delazon smith ( d )"},"date of successors formal installation":{"0":"october 8 , 1857","1":"december 7 , 1857","2":"june 27 , 1857","3":"november 9 , 1857","4":"may 11 , 1858","5":"may 11 , 1858","6":"may 11 , 1858","7":"september 27 , 1858","8":"december 3 , 1858","9":"february 14 , 1859"}}