Oklahoma GOP Rep. Kevin Hern, who President Donald Trump endorsed to replace Homeland Security Secretary Markwayne Mullin in the Senate, won his party's nomination Tuesday night, according to the Associated Press. 

The projection marks another expected victory for the president, who has helped dozens of Republican candidates win their primaries so far. 

Hern was expected to win the nomination after notching endorsements from the president, Senate Majority Leader John Thune and National Republican Senatorial Committee Chairman Tim Scott of South Carolina. 

Oklahoma GOP Gov. Kevin Stitt appointed Sen. Alan Armstrong to fill Mullin's seat in the interim, but he is not allowed to run for a full term under state law. 

Hern officially won the nomination with 68% of the vote, according to AP. 

Misty Severi is a news reporter for Just The News. You can follow her on X for more coverage.