The ruling TRS has retained the Nagarjuna Sagar assembly segment by winning a majority of over 18,000 votes in the bypoll held on April 17.
The counting of votes was taken up on Sunday.
TRS candidate Nomula Bhagat polled 89,804, his nearest Congress rival K Jana Reddy got 70,932 votes, while the BJP candidate lost the deposit.
The bypoll was necessitated due to the death of sitting TRS legislator Nomula Narsimhaiah in December last.