From humble beginnings, Haq has worked his way up to senior leadership positions in both religious and political parties. He is a former finance minister of the Khyber Pakhtunkhwa Assembly in Pakistan, resigning in protest at US drone strikes. In 2014, Haq was elected Ameer of Jamaat-e-Islaami, one of the most influential Islamic movements in Pakistan. In 2015, he joined the Parliament of Pakistan parliament as the Senator of Khyber Pakhtunkhwa. He became the Vice President of Muttahida Majlis-e-Amal in March 2018.