The election office put up by DMK in ward number 39 of Thanjavur Corporation was gutted in a fire that broke out on Sunday night.
Inquiries showed that the small office in Municipal Colony had a thatched roof that caught fire around 10.30 p.m. Subsequently, police and fire service personnel were alerted.
Fire tenders were rushed in and the blaze was put out within half-an-hour. Medical College Police have registered a case and are investigating.