In Chhattisgarh, a senior tribal leader of Bharatiya Janata Party, Nandkumar Sai joined the Congress party. <br />''<br />''Sai, the first leader of the opposition in the state of Chhattisgarh, quit the BJP yesterday.<br />''<br />''He had been a member of both Lok Sabha and Rajya Sabha from Chhattisgarh and was also appointed as the Chairman of the National Commission for Scheduled Tribes.<br />'' <br />''<span style="color: #222222;">The development is seen as a big political move as the senior tribal leader has quit BJP when the party has been gearing up for state assembly polls due in November this year.</span><br />