AP Decision Notes: What to expect in South Dakota’s state primary runoff

South Dakota Republicans will hold a primary runoff to decide between Gov. Larry Rhoden and businessman Toby Doeden for the governor's nomination, as neither candidate reached the required 35% vote threshold in the June primary. The winner will face Democratic former state Sen. Dan Ahlers in the general election. Key counties like Minnehaha and Pennington are expected to be pivotal in determining the outcome.