The BJP on Wednesday appointed its senior leader Arun Jaitley as the Leader of the Opposition in the Upper House and Sushma Swaraj Deputy Leader of the Opposition in the Lok Sabha.
S S Ahluwalia would be deputy leader of the opposition in the Rajya Sabha.
L K Advani, who had reluctantly accepted the post of Leader of the Opposition in the Lok Sabha after the party's dismal performance in Lok Sabha poll, was given the responsibility of choosing the leaders for these posts last Sunday.
Advani had met RSS chief Mohan Bhagwat on Monday and was reportedly authorised to take the decisions.
M Venkaiah Naidu was also in the race for the post of Leader of Opposition in the Upper House.
Swaraj will assist Advani as his deputy in the Lok Sabha and is likely to be replace him in a few months, BJP sources said.
Ramesh Bais, the senior party leader from Chhattisgarh, and Maya Singh, who hails from Madhya Pradesh, will be the Chief Whips of the party in the Lok Sabha and Rajya Sabha respectively.