[1] As of the 2021 assembly elections, the current MLA is T. J. Vinod of INC. Ernakulam Niyama Sabha constituency is composed of the following 24 wards of the Kochi Municipal Corporation (Ernakulam zone and Vaduthala zone), and 1 Gram Panchayat in Kanayannur Taluk:[2] Wards 29 and 30 are included in Kochi Taluk, while the remaining 22 wards in the constituency are parts of Kanayannur Taluk.

There were 1,64,534 registered voters in Eranakulam Constituency for the 2021 Kerala Niyama Sabha Election.

[4] Due to the election of the sitting MLA Hibi Eden as the MP from Ernakulam (Lok Sabha constituency), Ernakulam Niyamasabha Constituency went to by-polls on 21 October 2019.

[5] T. J. Vinod won the resulting by-election by 3750 votes.

[6] There were 1,54,092 registered voters in Ernakulam Constituency for the 2016 Kerala Niyamasabha Election.