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Oklahoma’s governor picks energy executive Alan Armstrong to fill Markwayne Mullin's Senate seat

Alan Armstrong, Tulsa-based energy executive, appointed by Gov. Kevin Stitt to hold Mullin’s Senate seat until November; Armstrong will not run for the full term, state law requires.

  • On Tuesday, Oklahoma Governor Kevin Stitt appointed energy executive Alan Armstrong to the U.S. Senate seat vacated by Markwayne Mullin, who was confirmed as Secretary of the Department of Homeland Security.
  • The Senate confirmed Mullin on Monday in a 54-45 vote, replacing Kristi Noem, who was fired earlier this month over immigration enforcement scrutiny.
  • Armstrong, a Tulsa-based executive, leads Williams Companies, which employs about 5,800 people and manages 30% of U.S. natural gas; he has never served in elected office.
  • Congressman Kevin Hern launched a campaign for the seat and secured an endorsement from President Donald Trump, while Armstrong plans to reform energy industry permitting processes.
  • State law limits Armstrong's tenure to about seven months until the November election, concluding weeks of speculation about who would replace Mullin, widely viewed as a key Senate defender.
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111 Articles

The Billings GazetteThe Billings Gazette
+3 Reposted by 3 other sources
Center

Okla. governor picks energy exec for Senate

OKLAHOMA CITY — Oklahoma's governor Tuesday appointed energy executive Alan Armstrong to serve in the U.S. Senate through the end of the year and finish the term of Republican Markwayne Mullin, the new homeland security secretary.

·Billings, United States
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Ohio Capital JournalOhio Capital Journal
+9 Reposted by 9 other sources
Lean Left

New US senator for Oklahoma sworn in, replacing Markwayne Mullin

Alan Armstrong, left, Oklahoma’s newest U.S. senator, participates in a reenactment of his swearing-in at the U.S. Capitol on March 24, 2026, alongside his wife, Shelly Armstrong, and Iowa GOP Sen. Chuck Grassley, president pro tempore of the Senate. (Photo by Shauneen Miranda/States Newsroom) WASHINGTON — Alan Armstrong, a Tulsa businessman, was sworn in Tuesday as Oklahoma’s newest U.S. senator. Armstrong temporarily fills the seat of Markwayn…

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The Lost Ogle broke the news in on Monday, March 23, 2026.
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