I think its a tall order ... BJP needs to reform itself.. Tamil religious identity is separate.. Although Hindus, Tamils pay more attention to Alwars, Nayanmars and their own lineages and Bhakti material ...
Also, Tamil as a language is used a lot as a mode of religion/devotion. BJP has to overcome these issues to strike a chord with the people.
Also, there is no animosity towards Christians or Muslims in TN .. SO BJP again has no agenda ..
Jaya is losing all her cadre to Vijayakanth and Sarath Kumar .. So cant rely on her either ..