The National Democratic Movement, a constituent of ruling Democratic Alliance of Nagaland, received a jolt today when two ministers joined the Nagaland People’s Front, another coalition partner, a day after being inducted.The two, Kihoto Hollohon, of Cabinet rank, and Kiphillisangtam, Minister of State, defected to NPF raising its strength to 21 in the 60-member House. NPF sources said party president Vizol welcomed the two into the party and hoped the stability of the government will be reinforced.NDM president K.L. Chishi expelled the two from primary and active membership of the party for anti-party activities.