How will Oklahoma replace Markwayne Mullin in Senate?
The Hill
by Sophie BramsMarch 5, 2026
The announcement that President Trump tapped Sen. Markwayne Mullin (R-Okla.) to take the helm at the Department of Homeland Security (DHS) has created a vacancy for his Senate seat ahead of the midterms. Oklahoma law allows the governor to appoint a replacement to the seat in the event of an unexpected vacancy until the next…
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Originally published on The Hill on 3/5/2026