ISLAMABAD: Pakistan Tehrek-e-Insaf (PTI) on Thursday is set to challenge Maryam Nawaz’s appointment as vice president of Pakistan Muslim League-Nawaz in the Election Commission of Pakistan, ARY News reported.<br /><br />The application challenging her appointment is finalised by the PTI’s lawmakers.<br /><br />“Awarding party position to Maryam Nawaz is in contradiction with the constitution and law of the land”, the plea read.