Karnataka assembly elections have kept the entire nation awake with uncertainty over the government formation. The recent turn of events has been in favour of the BJP as Governor Vajubhai Vala has given BJP the first chance to form the government. BS Yeddyurappa took oath as the chief minister of Karnataka at Raj Bhavan on Thursday morning. But his chief ministership is on shaky ground as Congress-JD(S) coalition is challenging the governor's decision, as together they have 115 MLAs on their side, vis-a-vis BJP's 104.