Chennai: AIADMK Deputy General Secretary T T V Dinakaran and O Panneerselvam-led rebel group's senior leader E Madhusudhanan yesterday filed their nominations for the R K Nagar Assembly constituency bypoll on April 12.

With the Election Commission freezing the party’s ‘two leaves’ election symbol and barring both groups from using the party name AIADMK after they staked claim to it, Dinakaran and Madhusudhanan will be contesting the bypoll on their ‘hat’ and ‘electric pole’ symbols respectively.