 In the 2018 general election, the Pakatan Harapan (PH) coalition led by new Prime Minister Mahathir Mohamad, Mukhriz's father, won 18 of the 36 state assembly seats.He took his oath of office before Kedah Sultan Tunku Sallehuddin Ibni Almarhum Sultan Badlishah in a ceremony held in Istana Anak Bukit.On May 17th 2020 , he resigned as Chief Minister of Kedah mentioning he couldn't hold on to majority amongst his state assemblymen and thus relinquished his position as Chief Minister of Kedah.