While the BJP versus Congress campaign may have dominated the Karnataka narrative, the two men leading the Congress campaign – DK Shivakumar and Siddaramiah – are both from the politically crucial agrarian heartland of the Old Mysore region. Their internal dynamics, caste equations and the battle with the Janata Dal Secular could well decide the final outcome. NDTV's special report decodes the battle in the JD(S) bastion.