The Shiv Sena's plans to take power in Maharashtra after ending its alliance with long-term partner BJP are on hold with the Congress holding the key. Sharad Pawar's Nationalist Congress Party (NCP), invited yesterday by the Governor to form a government after the BJP and Shiv Sena failed to do so, also waited as Congress chief Sonia Gandhi held consultations long after telling Sena chief Uddhav Thackeray on the phone that she would get back to him. With no party appearing to be in a position to form a government weeks after the October 24 state election verdict, Maharashtra is staring at President's Rule.