A senior campaign official tells The Associated Press that former White House spokeswoman Sarah Sanders plans to run for Arkansas governor.

The official spoke on condition of anonymity because they were not authorized to speak publicly. The official said Sanders plans to announce her candidacy Monday. The daughter of former Gov. Mike Huckabee, Sanders had been widely expected to run for the office after leaving the White House.

She joins a GOP primary that includes Lt. Gov. Tim Griffin and Attorney General Leslie Rutledge. Current GOP Gov. Asa Hutchinson barred by term limits from seeking re-election next year.