As soon as the Kerala state was formed after combining with the Travancore it was under the President’s rule. The first election was conducted in March 1957. In the beginning there were 126 Assembly Constituencies and 16 Parliamentary Constituencies. But today there are 140 Assembly Constituencies and 20 Parliamentary Constituencies.
These 140 Assembly constituency seats are reserved for various categories. Out of 140 seats, 126 are reserved for the general candidates. The remaining is reserved for the Schedule Castes and Schedule Tribes.
The elections in Assembly Constituencies and Parliamentary are conducted by the Returning Officer (R.O.). In each districts of Kerala, the Returning officers are none other than the district collectors.
Kerala Assembly constituencies
| 1 | Adoor | 48 | Kodakara | 95 | Parur |
| 2 | Alathur | 49 | Kodungallur | 96 | Pathanamthitta |
| 3 | Alleppey | 50 | Koduvally | 97 | Pathanapuram |
| 4 | Alwaye | 51 | Kollengode | 98 | Pattambi |
| 5 | Ambalapuzha | 52 | Kondotty | 99 | Payyannur |
| 6 | Ankamali | 53 | Konni | 100 | Peermade |
| 7 | Aranmula | 54 | Kothamangalam | 101 | Perambra |
| 8 | Ariyanad | 55 | Kottarakara | 102 | Peravoor |
| 9 | Aroor | 56 | Kottayam | 103 | Peringalam |
| 10 | Attingal | 57 | Kovalam | 104 | Perinthalmanna |
| 11 | Azhicode | 58 | Kundara | 105 | Perumbavoor |
| 12 | Badagara | 59 | Kunnamangalam (SC) | 106 | Piravom |
| 13 | Balusseri | 60 | Kunnamkulam | 107 | Ponnani |
| 14 | Beypore | 61 | Kunnathunad | 108 | Poonjar |
| 15 | Calicut-I | 62 | Kunnathur (SC) | 109 | Punaloor |
| 16 | Calicut-II | 63 | Kuthuparamba | 110 | Puthuppally |
| 17 | Cannanore | 64 | Kuttanad | 111 | Quilandy |
| 18 | Chadayamangalam | 65 | Kuttippuram | 112 | Quilon |
| 19 | Chalakudi | 66 | Mala | 113 | Ranni |
| 20 | Changanacherry | 67 | Malampuzha | 114 | Sherthalai |
| 21 | Chathanoor | 68 | Malappuram | 115 | Sreekrishnapuram |
| 22 | Chavara | 69 | Manalur | 116 | Sultan’s Battery |
| 23 | Chelakara (SC) | 70 | Manjeri | 117 | Taliparamba |
| 24 | Chengannur | 71 | Manjeswar | 118 | Tanur |
| 25 | Cherpu | 72 | Mankada | 119 | Tellicherry |
| 26 | Chittur | 73 | Mannarkkad | 120 | Thiruvalla |
| 27 | Coyalmannam (SC) | 74 | Mararikulam | 121 | Thiruvambadi |
| 28 | Devicolam (SC) | 75 | Mattancherry | 122 | Thodupuzha |
| 29 | Edakkad | 76 | Mavelikara | 123 | Thrippunithura |
| 30 | Eravipuram | 77 | Meppayur | 124 | Thrithala (SC) |
| 31 | Ernakulam | 78 | Muvattupuzha | 125 | Tirur |
| 32 | Ettumanoor | 79 | Nadapuram | 126 | Tirurangadi |
| 33 | Guruvayoor | 80 | Narakal (SC) | 127 | Trichur |
| 34 | Haripad | 81 | Nattika | 128 | Trikkarpur |
| 35 | Hosdrug (SC) | 82 | Nedumangad | 129 | Trivandrum East |
| 36 | Idukki | 83 | Neduvathur (SC) | 130 | Trivandrum North |
| 37 | Irikkur | 84 | Nemom | 131 | Trivandrum West |
| 38 | Irinjalakuda | 85 | Neyyattinkara | 132 | Udma |
| 39 | Kaduthuruthy | 86 | Nilambur | 133 | Udumbanchola |
| 40 | Kallooppara | 87 | North Wynad (ST) | 134 | Vadakkekara |
| 41 | Kalpetta | 88 | Ollur | 135 | Vaikom (SC) |
| 42 | Kanjirappally | 89 | Ottapalam | 136 | Vamanapuram |
| 43 | Karunagapally | 90 | Palai | 137 | Varkala |
| 44 | Kasaragod | 91 | Palghat | 138 | Vazhoor |
| 45 | Kayamkulam | 92 | Palluruthy | 139 | Wadakkancherry |
| 46 | Kazhakuttam | 93 | Pandalam (SC) | 140 | Wandoor (SC) |
| 47 | Kilimanoor (SC) | 94 | Parassala |