district                   vacator                           reason for change               successor date successor seated
0       tennessee 1st                    vacant      tennessee re - admitted into the union  nathaniel g taylor (u)        july 24 , 1866
1       tennessee 2nd                    vacant      tennessee re - admitted into the union     horace maynard (uu)        july 24 , 1866
2       tennessee 3rd                    vacant      tennessee re - admitted into the union   william b stokes (uu)        july 24 , 1866
3       tennessee 4th                    vacant      tennessee re - admitted into the union       edmund cooper (u)        july 24 , 1866
4       tennessee 5th                    vacant      tennessee re - admitted into the union  william b campbell (u)        july 24 , 1866
5       tennessee 6th                    vacant      tennessee re - admitted into the union    samuel m arnell (uu)        july 24 , 1866
6       tennessee 7th                    vacant      tennessee re - admitted into the union     isaac r hawkins (u)        july 24 , 1866
7       tennessee 8th                    vacant      tennessee re - admitted into the union    john w leftwich (uu)        july 24 , 1866
8       new york 16th       orlando kellogg (r)                       died august 24 , 1865       robert s hale (r)     december 3 , 1866
9   pennsylvania 16th  alexander h coffroth (d)  lost contested election february 19 , 1866    william h koontz (r)        july 18 , 1866
10        indiana 7th     daniel w voorhees (d)  lost contested election february 23 , 1866    henry d washburn (r)    february 23 , 1866
11       new york 8th          james brooks (d)      lost contested election april 7 , 1866     william e dodge (r)        april 7 , 1866
12       new york 3rd        james humphrey (r)                         died june 16 , 1866       john w hunter (d)     december 4 , 1866
13       kentucky 3rd          henry grider (d)                     died september 7 , 1866         elijah hise (d)     december 3 , 1866
14  pennsylvania 11th        philip johnson (d)                      died january 29 , 1867                  vacant  not filled this term

Table as JSON:
{"district":{"0":"tennessee 1st","1":"tennessee 2nd","2":"tennessee 3rd","3":"tennessee 4th","4":"tennessee 5th","5":"tennessee 6th","6":"tennessee 7th","7":"tennessee 8th","8":"new york 16th","9":"pennsylvania 16th","10":"indiana 7th","11":"new york 8th","12":"new york 3rd","13":"kentucky 3rd","14":"pennsylvania 11th"},"vacator":{"0":"vacant","1":"vacant","2":"vacant","3":"vacant","4":"vacant","5":"vacant","6":"vacant","7":"vacant","8":"orlando kellogg (r)","9":"alexander h coffroth (d)","10":"daniel w voorhees (d)","11":"james brooks (d)","12":"james humphrey (r)","13":"henry grider (d)","14":"philip johnson (d)"},"reason for change":{"0":"tennessee re - admitted into the union","1":"tennessee re - admitted into the union","2":"tennessee re - admitted into the union","3":"tennessee re - admitted into the union","4":"tennessee re - admitted into the union","5":"tennessee re - admitted into the union","6":"tennessee re - admitted into the union","7":"tennessee re - admitted into the union","8":"died august 24 , 1865","9":"lost contested election february 19 , 1866","10":"lost contested election february 23 , 1866","11":"lost contested election april 7 , 1866","12":"died june 16 , 1866","13":"died september 7 , 1866","14":"died january 29 , 1867"},"successor":{"0":"nathaniel g taylor (u)","1":"horace maynard (uu)","2":"william b stokes (uu)","3":"edmund cooper (u)","4":"william b campbell (u)","5":"samuel m arnell (uu)","6":"isaac r hawkins (u)","7":"john w leftwich (uu)","8":"robert s hale (r)","9":"william h koontz (r)","10":"henry d washburn (r)","11":"william e dodge (r)","12":"john w hunter (d)","13":"elijah hise (d)","14":"vacant"},"date successor seated":{"0":"july 24 , 1866","1":"july 24 , 1866","2":"july 24 , 1866","3":"july 24 , 1866","4":"july 24 , 1866","5":"july 24 , 1866","6":"july 24 , 1866","7":"july 24 , 1866","8":"december 3 , 1866","9":"july 18 , 1866","10":"february 23 , 1866","11":"april 7 , 1866","12":"december 4 , 1866","13":"december 3 , 1866","14":"not filled this term"}}