BSY vs Sidda vs Deve Gowda: Karnataka's battle of castes and old rivals

The polls set the stage for an intense BJP-Congress contest in Karnataka-in fact, the first of four this year-and will be marked by a determined effort by former PM HD Deve Gowda's JDS to prove its relevance by denying either of the principal combatants a clear victory, and use the consequent situation to play kingmaker.