President Trump has decided who he wants to see in the Senate as successor to Senator Markwayne Mullen (R-Oklahoma), whom he nominated as the next Secretary of the Department of Homeland Security (DHS). Trump offered his support to Rep. Kevin Hearn (Okla.-Oklahoma), who is up for grabs for the seat this week, in a Truth Social post on Friday.
Source: https://thehill.com/homenews/campaign/5783965-trump-endorses-kevin-hern/