Kailash Gahlot, Delhi's former Transport Minister and, till Sunday, one of the ruling Aam Aadmi Party's senior-most leaders, crossed the aisle this morning to join rivals Bharatiya Janata Party in the presence of Union Ministers ML Khattar and Harsh Malhotra. Mr Khattar described Mr Gahlot's induction as a "turning point", especially before the February election.