It is also one of the 7 state legislative assembly constituencies included in the Pathanamthitta Lok Sabha constituency.

[1] As of the 2021 assembly elections, the current MLA is Sebastian Kulathunkal of KC(M).

Poonjar Niyama Sabha constituency is composed of the following local self governed segments:[2] The following list contains all members of Kerala legislative assembly who have represented the constituency: Key INC  Independent  KC(M)  KEC  JD Sabha There were 1,89,091 registered voters in the constituency for the 2021 election.

[3] There were 1,83,590 registered voters in the constituency for the 2016 Kerala Niyamasabha Election.

[4] There were 1,67,928 registered voters in the constituency for the 2011 election.