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Alan Armstrong tapped by Oklahoma governor to fill Markwayne Mullin's Senate seat

Armstrong was appointed to serve in the Senate until voters elect a senator in November.

Alan Armstrong tapped by Oklahoma governor to fill Markwayne Mullin's Senate seat
Image · CBS News

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Outlet credibilityCBS News84/100 HIGH
This article1 analysis · Oct 8, 2026
CBS News
Mar 24, 2026
tl;dr

Oklahoma Gov. Kevin Stitt appointed energy executive Alan Armstrong to fill Markwayne Mullin’s vacant Senate seat. Armstrong will serve until the November election, while Rep. Kevin Hern is already a frontrunner for the full-term seat.

Community verdict

VOTING CLOSED
How does this story look for
Alan Armstrong R · OK · SEN
NOT RATEDCLOSED

No good or bad look here

This story reports what happened without casting Armstrong in a good or bad light, so readers don’t rate it and it doesn’t count toward Armstrong’s record.

● INFORMATIONAL

People in this story

SWIPE →
Alan Armstrong
R · OK · SEN

Appointed to fill Oklahoma’s vacant Senate seat

PRIMARY SUBJECT
Kevin Hern
R · OK-1

Oklahoma representative and Senate candidate

Donald Trump
R · President of the United States

President who endorsed Hern

John Thune
R · SD · SEN

Senate majority leader who endorsed Hern

Kristi Noem
Former U.S. Representative (R-SD)

Former secretary of Homeland Security

Markwayne Mullin
Secretary of Homeland Security

Outgoing senator confirmed as secretary of Homeland Security

ALSO MENTIONED  Kevin Stitt, Oklahoma governor who appointed Armstrong

Part of a bigger story

14 OUTLETS
Oklahoma Governor Appoints Alan Armstrong to Fill U.S. Senate Seat

Oklahoma Gov. Kevin Stitt appointed energy executive Alan Armstrong to replace Markwayne Mullin in the Senate. Armstrong is to serve temporarily while the seat’s next elected senator is determined. Center outlets largely focus on the appointment and interim succession, with some also discussing Armstrong’s political ties, priorities, or reactions to the pick. Right-leaning outlets likewise emphasize the temporary appointment; one report adds Armstrong’s donation to Adam Kinzinger and his limited public profile.

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