Bhopal: The Nationalist Congress Party (NCP) is weighing all legal options to challenge the defection of its seven legislators in Nagaland. The MLAs who have switched allegiance are Namri Nchang from Tening, Picto Shohe from Atoizu, Y Mhonbemo Humtsoe from Wokha Town, Y Mankhao Konyak from Mon Town, A Pongshi Phom from Longleng, P Longon.