Detroit-area businessman and Iraq War veteran John James has won the Republican nomination to run against Democratic Sen. Debbie Stabenow this fall.
James, a political newcomer endorsed by President Donald Trump, defeated Sandy Pensler in Tuesday's primary.
Stabenow is seeking a fourth Senate term and has easily fended off past challengers, but Trump's narrow 2016 victory in Michigan has the GOP hopeful it can flip the seat.
The 37-year-old James is an executive at his family's automotive logistics companies and a West Point graduate who flew helicopters during the Iraq War.
He is Michigan's first black Republican nominee for a major statewide office in more than three decades, but he has said he only wants to be assessed on his character.