New Delhi, Dec 05 (ANI): Union Parliamentary Affairs Minister Venkaiah Naidu said on Friday that the Opposition keeps changing stand over the issues raised by them. Naidu said that all demands of Opposition are being met but they do not know what they actually want. He also demanded the Congress party to explain why it did not take any action against its own ministers for using foul language during their tenure. Further Naidu said that Sadhvi Niranjan Jyoti is a minister and she will equally take part in election campaigns in Delhi and other states.