Sami-ul-Haq

With his party Jamiat Ulema-e-Islam (S), which split from Jamiat Ulema-e-Islam (F) because Haq supported Zia-ul-Haq and his policies, he was a member of the Senate of Pakistan from 1985 to 1991 and again from 1991 to 1997.
After his assassination in 2018 his son Hamid Ul Haq Haqqani became the chancellor of the seminary and the ameer or head of the political party. Provided by Wikipedia