BJP president Amit Shah will launch the party's poll campaign after the Lok Sabha election schedule was announced with a rally in Agra in Uttar Pradesh on Sunday, and its top leaders will hold rallies in every constituency across the country till Tuesday. Asserting that national security plank will figure high on the party's 'Vijay Sankalp' (Pledge for Victory) rallies planned for Sunday and Tuesday, senior party leader Mulkhtar Abbas Naqvi said the BJP will launch "ground strike" against "abusers of security forces".