The BJP might be looking to tighten the screws on Shivraj Singh Chouhan, the party's longest-serving chief minister, by not announcing his constituency in even the second list of candidates for the upcoming Madhya Pradesh assembly elections released on Monday. The incumbent party has, instead, pulled out its top guns to manage aspirations of senior regional leaders, extract the most from its top leadership to strengthen seats where they are weak, and throw the chief ministerial race wide open, a look at 76 of the total 230 candidates it has released so far shows. So far, Prime Minister Narendra Modi is at the centre of the BJP's electoral campaign in the state.