[1] As of the 2021 assembly elections, the current MLA is K. D. Prasenan of CPI(M).

Alathur 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 Alathur Niyamasabha Constituency during the period of various assemblies:[3] Percentage change (±%) denotes the change in the number of votes from the immediate previous election.

There were 165,294 registered voters in Alathur Constituency for the 2016 Election.

[4] There were 152,827 registered voters in the constituency for the 2011 election.