TN Election Results: These are the regions that helped DMK seal their victory Chennai has proven decisive. DMK candidates are leading in all the constituencies in the city and also in the neighbouring Tiruvallur district. Share Via Email | A+A A- By Express News Service CHENNAI: The DMK is set to return to power after 10 years in Tamil Nadu, but the fight has proven to be closer than the exit polls predicted. So, how did the battle play out in the various regions of the state? Which of these were decisive? This is what a look at the data available at 12:30 pm has revealed.