On Tuesday, BJP President Amit Shah had mocked the alliance saying 'zero plus zero remains a zero'.
Upendra Kushwaha, president of the Rashtriya Lok Samta Party, which is part of the National Democratic Alliance government at the Centre, admits the Bihar assembly elections will be a close contest and will be fought along the lines of caste.
Congress spokesperson Rajeev Gowda tells A Ganesh Nadar why his party may join the Nitish Kumar-led Janata parivar alliance.