Ijaz ul Haq entered politics after the tragic death of his father, General Zia-ul-Haq, in 1988. He joined PML-N in 1990, was elected to Parliament, and served as Minister for Labour and Religious Affairs. In 2002, he founded PML-Z. He promoted interfaith harmony and passed a minority voting bill. Currently, he leads PML-Z, allied with PML-N.