CPI-M candidate Pravat Chowdhury Tuesday won the Manu assembly seat in southern Tripura.
Chowdhury defeated his nearest Congress rival Mailafru Mog by a record margin of around 16,000 votes, officials here said.
The returning officer to the Manu assembly bypoll, Rajib Datta told IANS that the CPI-M (Communist Party of India-Marxist) candidate Chowdhury, a former agriculture department official, secured 21,759 votes while his nearest Congress nominee Mailafru Mog got 5,788 votes.
The byelection was held Saturday.