12. Democratic incumbent running - Republican challenger
13. Democratic incumbent running - other challenger
14. Democratic incumbent running - unopposed
19. Democratic incumbent running - Repub and other challengers
21. Republican incumbent running - Democratic challenger
23. Republican incumbent running - other challenger
24. Republican incumbent running - unopposed
29. Republican incumbent running - Dem and other challengers
31. Other incumbent running - Democratic challenger
32. Other incumbent running - Republican challenger
34. Other incumbent running - unopposed
35. Other incumbent running - Democratic and Republican challengers
36. Other incumbent running -- Republican and other challengers
37. Other incumbent running -- Democratic and other challengers
39. Other incumbent running -- Democratic, Republican, other
51. Dem incumbent not running -- DEMOCRATIC CANDIDATE UNOPPOSED
52. Dem incumbent not running -- REPUBLICAN CANDIDATE UNOPPOSED
53. Dem incumbent not running -- OTHER CANDIDATE UNOPPOSED
55. Dem incumbent not running -- DEMOCRATIC AND REPUBLICAN CANDS
56. Dem incumbent not running -- REPUBLICAN AND OTHER CANDS
57. Dem incumbent not running -- DEMOCRATIC AND OTHER CANDS
59. Dem incumbent not running -- DEMOCRATIC, REPUBLICAN, OTHER CANDS
61. Rep incumbent not running -- DEMOCRATIC CANDIDATE UNOPPOSED
62. Rep incumbent not running -- REPUBLICAN CANDIDATE UNOPPOSED
63. Rep incumbent not running -- OTHER CANDIDATE UNOPPOSED
65. Rep incumbent not running -- DEMOCRATIC AND REPUBLICAN CANDS
66. Rep incumbent not running -- REPUBLICAN AND OTHER CANDS
67. Rep incumbent not running -- DEMOCRATIC AND OTHER CANDS
69. Rep incumbent not running -- DEMOCRATIC, REPUBLICAN, OTHER CANDS
71. Other incumbent not running -- DEMOCRATIC CANDIDATE UNOPPOSED
72. Other incumbent not running -- REPUBLICAN CANDIDATE UNOPPOSED
73. Other incumbent not running -- OTHER CANDIDATE UNOPPOSED
75. Other incumbent not running -- DEMOCRATIC AND REPUBLICAN CANDS
76. Other incumbent not running -- REPUBLICAN AND OTHER CANDS
77. Other incumbent not running -- DEMOCRATIC AND OTHER CANDS
79. Other incumbent not running -- DEMOCRATIC, REPUBLICAN, OTHER