In a jolt to the ruling AIADMK, sidelined leader TTV Dhinakaran on Sunday won the prestigious RK Nagar Assembly bypoll by a thumping margin of over 40,000 votes.
Dhinakaran, nephew of jailed leader VK Sasikala, defeated his nearest rival E Madhusudhanan of the AIADMK by 40,707 votes. Polling for the seat was held on December 21.
The bypoll in the Assembly constituency was necessitated following the death of J Jayalalithaa in December last. The late Tamil Nadu chief minister was elected from the RK Nagar seat in north Chennai.