In a verdict that could bear on the stability of the Tamil Nadu government led by Chief Minister K Palaniswami, the Madras High Court will decide on a bunch of petitions filed by 18 AIADMK rebel lawmakers who were disqualified by the Speaker of the assembly last year ahead of a trust vote. The High Court did not stay the Speaker's move but put the floor test on hold and directed that the 18 seats be kept vacant till its final orders.