Alan Armstrong
Oklahoma Republican Senate nominee?
$91.4K
JUN 17, 2026Primary Election
Party selects its nominee.
Overview
Current roleU.S. Senator
PartyRepublican
Political ideologyTrump-aligned Republican
Age64 years old (Jul 11, 1962)
GenderMale
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LocationOklahoma
BackgroundUnited States Senator
EducationUniversity of Oklahoma — B.S., Civil Engineering
Notable personal detailsAlan Stuart Armstrong is a Republican politician and former energy executive serving as the junior United States senator from Oklahoma since March 24, 2026, appointed by Governor Kevin Stitt. He previously spent nearly four decades at The Williams Companies, serving as president and CEO from 2011 to 2025 and later as executive chairman beginning in July 2025. He earned a bachelor’s degree in civil engineering from the University of Oklahoma.
SourcesShowHide
Positions
Economy & Taxes
Advocates pro-business, pro-energy-sector tax policies that favor lower corporate tax burdens and tax provisions such as bonus depreciation while opposing regulatory constraints that raise project costs; identifies as politically conservative but supports maintaining an adequate tax base for government services.
Climate & Energy
Alan Armstrong, as CEO and later executive chairman of Williams Companies, frames natural gas as a key part of a lower-emissions transition while supporting company greenhouse-gas reduction goals and net-zero by 2050 targets. He emphasizes investing in emissions-reduction measures and infrastructure that enable lower-carbon energy while continuing to deploy natural gas to replace higher‑emission fuels and back up renewables.
News
Alan Armstrong was appointed by Oklahoma Gov. Kevin Stitt to fill the U.S. Senate seat left vacant by Markwayne Mullin. He will serve only as an interim senator and is not eligible to run for the seat in the upcoming election. The race to replace him is already underway, with Rep. Kevin Hern emerging as the leading Republican candidate and winning the GOP nomination. Some reporting also noted backlash from MAGA supporters over Armstrong’s appointment because of his past donation to a Trump critic.
What Alan Armstrong’s Senate Appointment Means for Republicans
Oklahoma’s governor picks energy executive Alan Armstrong to fill US Senate seat through end of year
Alan Armstrong tapped by Oklahoma governor to fill Markwayne Mullin's Senate seat
MAGA furious as it discovers likely replacement for Markwayne Mullin funded Trump nemesis
New updates coming soon
We're monitoring and will update when new data impacts the race.
- Polls
- Endorsements
- Fundraising