An zaɓi Dakta Dalhatu Umaru Sangari a matsayin Sanata mai wakiltar mazabar Taraba ta Kudu a jihar Taraba, Najeriya a farkon Jamhuriya ta Hudu ta Najeriya, inda ya tsaya takara a dandalin All People Party (APP). Ya hau mulki a ranar 29 ga watan Mayun shekara ta 1999. Sangari ya sami digirin digirgir a ci gaban albarkatun ƙasa daga Jami'ar Ibadan . Ya kasance malami a fannin yanayin kasa kuma mai bincike a jami’ar Bayero ta Kano tsawon shekaru 16 kafin ya shiga siyasa. Ya zama Mataimakin Shugaban Makarantar Sakandare ta Jami'ar (1996 - 1998). An zabe shi a matsayin sanata a lokacin mulkin rikon kwarya na Sani Abacha, amma bai hau kujerar sa ba kafin rasuwar Abacha. Bayan ya hau kujerar sa a Majalisar Dattawa a watan Yunin shekara ta 1999 an nada Sangari kwamitoci kan Muhalli, Kwadago, Albarkatun Ruwa (mataimakin shugaba), Ilimi, Labarai da Harkokin Gwamnati. An nada shi mamba a kwamitin da Sanata Idris Ibrahim Kuta ke jagoranta wanda ya binciki yuwuwar almubazzaranci na kudi a cikin kyaututtukan kwangila tsakanin watan Yunin shekara ta 1999 zuwa watan Yulin shekara ta 2000, wanda ya zargi Sanatoci da dama.