Alathur has been a bastion of the Left parties since first assembly election to the seat in 1957. While K. Kusalakumar has been fielded by the Kerala congress (M) to contest the Alathur assembly constituency on behalf of the United Democratic front (UDF) in the 2016 assembly elections, K D Prasenan of the CPI (M) is on the fray on behalf of the Left democratic front (LDF).
| Name of the Candidate | Party Name | Results |