NEW DELHI, April 18 -- 2019 will be the first parliamentary election in Tamil Nadu after the death of two of the state's biggest leaders: J Jayalalithaa of the All India Anna Dravida Munnetra Kazhagam (AIADMK) and M Karunanidhi of the Dravida Munnetra Kazhagam (DMK). The AIADMK created history by retaining power in Tamil Nadu by winning the assembly elections twice in a row, 2011 and 2016, ending a twodecade old trend. Tamil Nadu has flipped between the AIADMK and the DMK since 1989....