UDF candidate R Selvaraj defeated his nearest LDF rival S Lawrence by over 5,000 votes.
The bypoll, held on June 4, was necessitated by resignation of the assembly membership by Selvaraj, who won the seat located near the Kerala capital in 2011 assembly polls on a CPI(M) ticket.
After resigning as MLA and quitting the CPI(M), Selvaraj joined the Congress and was back in the fray as the UDF nominee for the keenly fought by poll.