Riding high on its victory in the municipal polls, the Bharatiya Janata Party (BJP) has already begun the groundwork for the Assembly polls, more than a year away. The party on Saturday organised a convention of Residents' Welfare Associations (RWAs) to mobilise a movement to oust the Congress government in the state. The Talkatora indoor stadium, packed with members from over 4,500 RWAs, reverberated with slogans opposing the Delhi government's plan to hike electricity tariff and privatise Delhi Jal Board.