Actress Sumalatha on Wednesday filed her nomination as an Independent candidate from Mandya where she will take on Karnataka Chief Minister H D Kumaraswamy's son Nikhil Gowda in what is promising to be a high-stakes battle. Sumalatha, who has acted in over 200 south Indian films, is the widow of Congressman-film star M H Ambareesh who has a huge fan following in Mandya.