Oil executive picked for Oklahoma Senate seat

By Timothy Cama | 03/24/2026 01:08 PM EDT

Alan Armstrong is scheduled to serve through the midterm elections.

Oklahoma Governor Kevin Stitt and his appointee to the U.S. Senate, Alan Armstrong.

(Left to right) Oklahoma Gov. Kevin Stitt (R) and his appointee to the Senate, Alan Armstrong, are seen during a Tuesday event in Oklahoma City. Alonzo Adsms/AP

Oklahoma Republican Gov. Kevin Stitt picked oil and gas executive Alan Armstrong to be the state’s next U.S. senator. Armstrong will be sworn in as soon as Tuesday.

Armstrong, 63, is a political newcomer. And he’ll only serve until January, when the winner of the November election — which Oklahoma law prevents him from running in — takes office.

Former Sen. Markwayne Mullin (R), who was elected in 2022, stepped down Monday after the Senate confirmed him to be secretary of the Homeland Security Department.

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Armstrong, a Republican, is executive chair of Williams Cos., which operates natural gas pipelines, processing, electricity transmission and other energy businesses. He has worked for the Tulsa-based company for four decades and was CEO until last year.

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