The battle for Tamil Nadu’s Tuticorin will be closely watched. DMK's Kanimozhi Karunanidhi is looking to stake her claim to a seat against the BJP's state president Tamilisai Soundararajan. CNBC-TV18's Election Caravan, which has been in Tuticorin for a greater part of the week, finds that the anti-Sterlite sentiment in the constituency will be one of the biggest campaign points this time, reports Jude Sannith.