The Biju Janata Dal (BJD) has timed it to perfection. As the 127th constitutional amendment Bill, restoring the power to decide on the list of backward classes to states, sailed through Parliament, the ruling party in Odisha has ratcheted up its demand for a caste-based census in the state. In a memorandum submitted by BJD MPs to Home Minister Amit Shah yesterday, the party also demanded a Central law that removes the 50% cap on reservations imposed by the Supreme Court.