SENATE
Oklahoma Senate2026
RACE AT A GLANCE
RACE TYPE
OPEN
Alan Armstrong (R)
Retiring
COOK PARTISAN VOTING INDEX
Last updated : Apr 27, 2026D +50
R +50
R +17
Race summary
After advancing in the Repulican primary in June, Kevin Hern is the clear favorite to fill the seat of Senator Markwayne Mullin.Key Dates
Filing Deadline: Apr 3, 2026
Primary Election: Jun 16, 2025
INCUMBENT
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CANDIDATES
Republicans
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Democrats
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STATE DATA
Oklahoma
Population Breakdown
Source: United States Census
Past Presidential Results from this State
2024 Election Results
Source: The Cook Political Report
2020 Election Results
Source: The Cook Political Report
RACE ANALYSIS
Race Analysis
Updated: Mar 31, 2026
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