It is also one of the seven state legislative assembly constituencies included in the Kannur Lok Sabha constituency.

As of the 2021 assembly elections, the current MLA is K. K. Shailaja of CPI(M).

Mattannur Niyamasabha constituency is composed of the following local self-governed segments:[1] [2] There were 1,89,308 registered voters in the constituency for the 2021 election.

[3] There were 1,77,911 registered voters in the constituency for the 2016 election.

There were 1,60,771 registered voters in the constituency for the 2011 election.