A day before Prime Minister Narendra Modi's campaign in Maharashtra for polls next Monday, opposition politician Sharad Pawar on Tuesday took a swipe at the ruling BJP, saying it had nothing concrete to show so it was harping on the decision to end special status to Jammu and Kashmir as an answer for all questions it faced. "Since the BJP does not have anything concrete to show, they are harping on abrogation of Article 370 in J-K. When it was revoked, some people in Kashmir protested. The Congress supported the proposal and asked that people there be taken into confidence.