Hern wins GOP primary

Hern’s primary win, NBC News projects, makes him a heavy favorite to win Homeland Security Secretary Markwayne Mullin’s old Senate seat in November.

1. Frame 1Kevin Hern's projected GOP primary win puts Oklahoma voters on a November Senate ballot to fill Markwayne Mullin's former seat.
2. Frame 2Trump endorsed Hern in March, and reporting says that early backing kept major Republican challengers away.
3. Frame 3The seat opened when Mullin left the Senate in March to become homeland security secretary.
4. Frame 4Oklahoma has not elected a Democratic senator since 1990, so the primary shaped the likely successor.
5. Frame 5Sen. Alan Armstrong was appointed to hold the seat before voters choose the fall winner.
6. Frame 6The practical test moves to November, when voters decide the seat beyond Armstrong's appointment.