Chelakkara is one of the 140 state legislative assembly constituencies in Kerala. It is also one of the seven state legislative assembly constituencies included in Alathur Lok Sabha constituency. As of the 2021 assembly election, the MLA is K. Radhakrishnan of Communist Party of India (Marxist); however, Radhakrishnan resigned after winning Alathur Lok Sabha constituency in the 2024 general election.

Chelakkara Assembly constituency is composed of the following local self-governed segments:

The following list contains all members of Kerala Legislative Assembly who have represented the constituency:

^by-election

There were 2,13,103 eligible voters in the 2024 Chelakkara Assembly constituency by-election.

There were 1,98,086 registered voters in the constituency for the 2021 election.

There were 1,90,919 registered voters in the constituency for the 2016 election.

There were 1,73,746 registered voters in the constituency for the 2011 election.