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Politics·Senate

Who will replace Mullin as Oklahoma Senator?

Market icon
Politics·Senate

Who will replace Mullin as Oklahoma Senator?

Charles McCall 34.7%

Ryan Walters 27.8%

Matt Pinnell 10%

Gentner Drummond 5.0%

Polymarket

$26,879 Vol.

Charles McCall 34.7%

Ryan Walters 27.8%

Matt Pinnell 10%

Gentner Drummond 5.0%

Polymarket

$26,879 Vol.

Gentner Drummond

$0 Vol.

12%

Matt Pinnell

$21,531 Vol.

10%

Kevin Hern

$2,968 Vol.

2%

Stephanie Bice

$0 Vol.

3%

Kevin Stitt

$2,380 Vol.

3%

Charles McCall

$0 Vol.

35%

Ryan Walters

$0 Vol.

28%

None Before Midterm Election

$0 Vol.

4%

On March 5, 2026, Donald Trump announced that the United States Senator from Oklahoma, Markwayne Mullin, will be appointed to replace Kristi Noem as United States Secretary of Homeland Security. This market will resolve according to the next person officially appointed by the Governor of Oklahoma, or otherwise formally selected according the jurisdiction's vacancy rules, to fill Markwayne Mullin’s seat as United States Senator from Oklahoma. Interim, Acting, or other temporary Senators appointed or elected to the role will count. If no replacement senator has been appointed or elected by November 2, 2026, 11:59 PM ET, this market will resolve to “None Before Midterm Election.” Additionally, if, prior to November 2, 2026, 11:59 PM ET, a widespread consensus of credible reporting indicates that Markwayne Mullin will complete his term as United States Senator (e.g. if Mullin’s nomination as Secretary of Homeland Security is rejected or withdrawn and he announces he will complete his term), this market will resolve immediately to “None Before Midterm Election.” The primary resolution source for this market will be official information from the Government of Oklahoma; however, a consensus of credible reporting may also be used.On March 5, 2026, Donald Trump announced that the United States Senator from Oklahoma, Markwayne Mullin, will be appointed to replace Kristi Noem as United States Secretary of Homeland Security. This market will resolve according to the next person officially appointed by the Governor of Oklahoma, or otherwise formally selected according the jurisdiction's vacancy rules, to fill Markwayne Mullin’s seat as United States Senator from Oklahoma. Interim, Acting, or other temporary Senators appointed or elected to the role will count. If no replacement senator has been appointed or elected by November 2, 2026, 11:59 PM ET, this market will resolve to “None Before Midterm Election.” Additionally, if, prior to November 2, 2026, 11:59 PM ET, a widespread consensus of credible reporting indicates that Markwayne Mullin will complete his term as United States Senator (e.g. if Mullin’s nomination as Secretary of Homeland Security is rejected or withdrawn and he announces he will complete his term), this market will resolve immediately to “None Before Midterm Election.” The primary resolution source for this market will be official information from the Government of Oklahoma; however, a consensus of credible reporting may also be used.On March 5, 2026, Donald Trump announced that the United States Senator from Oklahoma, Markwayne Mullin, will be appointed to replace Kristi Noem as United States Secretary of Homeland Security. This market will resolve according to the next person officially appointed by the Governor of Oklahoma, or otherwise formally selected according the jurisdiction's vacancy rules, to fill Markwayne Mullin’s seat as United States Senator from Oklahoma. Interim, Acting, or other temporary Senators appointed or elected to the role will count. If no replacement senator has been appointed or elected by November 2, 2026, 11:59 PM ET, this market will resolve to “None Before Midterm Election.” Additionally, if, prior to November 2, 2026, 11:59 PM ET, a widespread consensus of credible reporting indicates that Markwayne Mullin will complete his term as United States Senator (e.g. if Mullin’s nomination as Secretary of Homeland Security is rejected or withdrawn and he announces he will complete his term), this market will resolve immediately to “None Before Midterm Election.” The primary resolution source for this market will be official information from the Government of Oklahoma; however, a consensus of credible reporting may also be used.On March 5, 2026, Donald Trump announced that the United States Senator from Oklahoma, Markwayne Mullin, will be appointed to replace Kristi Noem as United States Secretary of Homeland Security. This market will resolve according to the next person officially appointed by the Governor of Oklahoma, or otherwise formally selected according the jurisdiction's vacancy rules, to fill Markwayne Mullin’s seat as United States Senator from Oklahoma. Interim, Acting, or other temporary Senators appointed or elected to the role will count. If no replacement senator has been appointed or elected by November 2, 2026, 11:59 PM ET, this market will resolve to “None Before Midterm Election.” Additionally, if, prior to November 2, 2026, 11:59 PM ET, a widespread consensus of credible reporting indicates that Markwayne Mullin will complete his term as United States Senator (e.g. if Mullin’s nomination as Secretary of Homeland Security is rejected or withdrawn and he announces he will complete his term), this market will resolve immediately to “None Before Midterm Election.” The primary resolution source for this market will be official information from the Government of Oklahoma; however, a consensus of credible reporting may also be used.On March 5, 2026, Donald Trump announced that the United States Senator from Oklahoma, Markwayne Mullin, will be appointed to replace Kristi Noem as United States Secretary of Homeland Security. This market will resolve according to the next person officially appointed by the Governor of Oklahoma, or otherwise formally selected according the jurisdiction's vacancy rules, to fill Markwayne Mullin’s seat as United States Senator from Oklahoma. Interim, Acting, or other temporary Senators appointed or elected to the role will count. If no replacement senator has been appointed or elected by November 2, 2026, 11:59 PM ET, this market will resolve to “None Before Midterm Election.” Additionally, if, prior to November 2, 2026, 11:59 PM ET, a widespread consensus of credible reporting indicates that Markwayne Mullin will complete his term as United States Senator (e.g. if Mullin’s nomination as Secretary of Homeland Security is rejected or withdrawn and he announces he will complete his term), this market will resolve immediately to “None Before Midterm Election.” The primary resolution source for this market will be official information from the Government of Oklahoma; however, a consensus of credible reporting may also be used.On March 5, 2026, Donald Trump announced that the United States Senator from Oklahoma, Markwayne Mullin, will be appointed to replace Kristi Noem as United States Secretary of Homeland Security. This market will resolve according to the next person officially appointed by the Governor of Oklahoma, or otherwise formally selected according the jurisdiction's vacancy rules, to fill Markwayne Mullin’s seat as United States Senator from Oklahoma. Interim, Acting, or other temporary Senators appointed or elected to the role will count. If no replacement senator has been appointed or elected by November 2, 2026, 11:59 PM ET, this market will resolve to “None Before Midterm Election.” Additionally, if, prior to November 2, 2026, 11:59 PM ET, a widespread consensus of credible reporting indicates that Markwayne Mullin will complete his term as United States Senator (e.g. if Mullin’s nomination as Secretary of Homeland Security is rejected or withdrawn and he announces he will complete his term), this market will resolve immediately to “None Before Midterm Election.” The primary resolution source for this market will be official information from the Government of Oklahoma; however, a consensus of credible reporting may also be used.On March 5, 2026, Donald Trump announced that the United States Senator from Oklahoma, Markwayne Mullin, will be appointed to replace Kristi Noem as United States Secretary of Homeland Security. This market will resolve according to the next person officially appointed by the Governor of Oklahoma, or otherwise formally selected according the jurisdiction's vacancy rules, to fill Markwayne Mullin’s seat as United States Senator from Oklahoma. Interim, Acting, or other temporary Senators appointed or elected to the role will count. If no replacement senator has been appointed or elected by November 2, 2026, 11:59 PM ET, this market will resolve to “None Before Midterm Election.” Additionally, if, prior to November 2, 2026, 11:59 PM ET, a widespread consensus of credible reporting indicates that Markwayne Mullin will complete his term as United States Senator (e.g. if Mullin’s nomination as Secretary of Homeland Security is rejected or withdrawn and he announces he will complete his term), this market will resolve immediately to “None Before Midterm Election.” The primary resolution source for this market will be official information from the Government of Oklahoma; however, a consensus of credible reporting may also be used.On March 5, 2026, Donald Trump announced that the United States Senator from Oklahoma, Markwayne Mullin, will be appointed to replace Kristi Noem as United States Secretary of Homeland Security. This market will resolve according to the next person officially appointed by the Governor of Oklahoma, or otherwise formally selected according the jurisdiction's vacancy rules, to fill Markwayne Mullin’s seat as United States Senator from Oklahoma. Interim, Acting, or other temporary Senators appointed or elected to the role will count. If no replacement senator has been appointed or elected by November 2, 2026, 11:59 PM ET, this market will resolve to “None Before Midterm Election.” Additionally, if, prior to November 2, 2026, 11:59 PM ET, a widespread consensus of credible reporting indicates that Markwayne Mullin will complete his term as United States Senator (e.g. if Mullin’s nomination as Secretary of Homeland Security is rejected or withdrawn and he announces he will complete his term), this market will resolve immediately to “None Before Midterm Election.” The primary resolution source for this market will be official information from the Government of Oklahoma; however, a consensus of credible reporting may also be used.

On March 5, 2026, Donald Trump announced that the United States Senator from Oklahoma, Markwayne Mullin, will be appointed to replace Kristi Noem as United States Secretary of Homeland Security.

This market will resolve according to the next person officially appointed by the Governor of Oklahoma, or otherwise formally selected according the jurisdiction's vacancy rules, to fill Markwayne Mullin’s seat as United States Senator from Oklahoma.

Interim, Acting, or other temporary Senators appointed or elected to the role will count.

If no replacement senator has been appointed or elected by November 2, 2026, 11:59 PM ET, this market will resolve to “None Before Midterm Election.”

Additionally, if, prior to November 2, 2026, 11:59 PM ET, a widespread consensus of credible reporting indicates that Markwayne Mullin will complete his term as United States Senator (e.g. if Mullin’s nomination as Secretary of Homeland Security is rejected or withdrawn and he announces he will complete his term), this market will resolve immediately to “None Before Midterm Election.”

The primary resolution source for this market will be official information from the Government of Oklahoma; however, a consensus of credible reporting may also be used.
Volume
$26,879
End Date
Nov 3, 2026
Market Opened
Mar 5, 2026, 5:09 PM ET

Resolver

0x69c47De9D...
On March 5, 2026, Donald Trump announced that the United States Senator from Oklahoma, Markwayne Mullin, will be appointed to replace Kristi Noem as United States Secretary of Homeland Security. This market will resolve according to the next person officially appointed by the Governor of Oklahoma, or otherwise formally selected according the jurisdiction's vacancy rules, to fill Markwayne Mullin’s seat as United States Senator from Oklahoma. Interim, Acting, or other temporary Senators appointed or elected to the role will count. If no replacement senator has been appointed or elected by November 2, 2026, 11:59 PM ET, this market will resolve to “None Before Midterm Election.” Additionally, if, prior to November 2, 2026, 11:59 PM ET, a widespread consensus of credible reporting indicates that Markwayne Mullin will complete his term as United States Senator (e.g. if Mullin’s nomination as Secretary of Homeland Security is rejected or withdrawn and he announces he will complete his term), this market will resolve immediately to “None Before Midterm Election.” The primary resolution source for this market will be official information from the Government of Oklahoma; however, a consensus of credible reporting may also be used.
On March 5, 2026, Donald Trump announced that the United States Senator from Oklahoma, Markwayne Mullin, will be appointed to replace Kristi Noem as United States Secretary of Homeland Security. This market will resolve according to the next person officially appointed by the Governor of Oklahoma, or otherwise formally selected according the jurisdiction's vacancy rules, to fill Markwayne Mullin’s seat as United States Senator from Oklahoma. Interim, Acting, or other temporary Senators appointed or elected to the role will count. If no replacement senator has been appointed or elected by November 2, 2026, 11:59 PM ET, this market will resolve to “None Before Midterm Election.” Additionally, if, prior to November 2, 2026, 11:59 PM ET, a widespread consensus of credible reporting indicates that Markwayne Mullin will complete his term as United States Senator (e.g. if Mullin’s nomination as Secretary of Homeland Security is rejected or withdrawn and he announces he will complete his term), this market will resolve immediately to “None Before Midterm Election.” The primary resolution source for this market will be official information from the Government of Oklahoma; however, a consensus of credible reporting may also be used.On March 5, 2026, Donald Trump announced that the United States Senator from Oklahoma, Markwayne Mullin, will be appointed to replace Kristi Noem as United States Secretary of Homeland Security. This market will resolve according to the next person officially appointed by the Governor of Oklahoma, or otherwise formally selected according the jurisdiction's vacancy rules, to fill Markwayne Mullin’s seat as United States Senator from Oklahoma. Interim, Acting, or other temporary Senators appointed or elected to the role will count. If no replacement senator has been appointed or elected by November 2, 2026, 11:59 PM ET, this market will resolve to “None Before Midterm Election.” Additionally, if, prior to November 2, 2026, 11:59 PM ET, a widespread consensus of credible reporting indicates that Markwayne Mullin will complete his term as United States Senator (e.g. if Mullin’s nomination as Secretary of Homeland Security is rejected or withdrawn and he announces he will complete his term), this market will resolve immediately to “None Before Midterm Election.” The primary resolution source for this market will be official information from the Government of Oklahoma; however, a consensus of credible reporting may also be used.On March 5, 2026, Donald Trump announced that the United States Senator from Oklahoma, Markwayne Mullin, will be appointed to replace Kristi Noem as United States Secretary of Homeland Security. This market will resolve according to the next person officially appointed by the Governor of Oklahoma, or otherwise formally selected according the jurisdiction's vacancy rules, to fill Markwayne Mullin’s seat as United States Senator from Oklahoma. Interim, Acting, or other temporary Senators appointed or elected to the role will count. If no replacement senator has been appointed or elected by November 2, 2026, 11:59 PM ET, this market will resolve to “None Before Midterm Election.” Additionally, if, prior to November 2, 2026, 11:59 PM ET, a widespread consensus of credible reporting indicates that Markwayne Mullin will complete his term as United States Senator (e.g. if Mullin’s nomination as Secretary of Homeland Security is rejected or withdrawn and he announces he will complete his term), this market will resolve immediately to “None Before Midterm Election.” The primary resolution source for this market will be official information from the Government of Oklahoma; however, a consensus of credible reporting may also be used.On March 5, 2026, Donald Trump announced that the United States Senator from Oklahoma, Markwayne Mullin, will be appointed to replace Kristi Noem as United States Secretary of Homeland Security. This market will resolve according to the next person officially appointed by the Governor of Oklahoma, or otherwise formally selected according the jurisdiction's vacancy rules, to fill Markwayne Mullin’s seat as United States Senator from Oklahoma. Interim, Acting, or other temporary Senators appointed or elected to the role will count. If no replacement senator has been appointed or elected by November 2, 2026, 11:59 PM ET, this market will resolve to “None Before Midterm Election.” Additionally, if, prior to November 2, 2026, 11:59 PM ET, a widespread consensus of credible reporting indicates that Markwayne Mullin will complete his term as United States Senator (e.g. if Mullin’s nomination as Secretary of Homeland Security is rejected or withdrawn and he announces he will complete his term), this market will resolve immediately to “None Before Midterm Election.” The primary resolution source for this market will be official information from the Government of Oklahoma; however, a consensus of credible reporting may also be used.On March 5, 2026, Donald Trump announced that the United States Senator from Oklahoma, Markwayne Mullin, will be appointed to replace Kristi Noem as United States Secretary of Homeland Security. This market will resolve according to the next person officially appointed by the Governor of Oklahoma, or otherwise formally selected according the jurisdiction's vacancy rules, to fill Markwayne Mullin’s seat as United States Senator from Oklahoma. Interim, Acting, or other temporary Senators appointed or elected to the role will count. If no replacement senator has been appointed or elected by November 2, 2026, 11:59 PM ET, this market will resolve to “None Before Midterm Election.” Additionally, if, prior to November 2, 2026, 11:59 PM ET, a widespread consensus of credible reporting indicates that Markwayne Mullin will complete his term as United States Senator (e.g. if Mullin’s nomination as Secretary of Homeland Security is rejected or withdrawn and he announces he will complete his term), this market will resolve immediately to “None Before Midterm Election.” The primary resolution source for this market will be official information from the Government of Oklahoma; however, a consensus of credible reporting may also be used.On March 5, 2026, Donald Trump announced that the United States Senator from Oklahoma, Markwayne Mullin, will be appointed to replace Kristi Noem as United States Secretary of Homeland Security. This market will resolve according to the next person officially appointed by the Governor of Oklahoma, or otherwise formally selected according the jurisdiction's vacancy rules, to fill Markwayne Mullin’s seat as United States Senator from Oklahoma. Interim, Acting, or other temporary Senators appointed or elected to the role will count. If no replacement senator has been appointed or elected by November 2, 2026, 11:59 PM ET, this market will resolve to “None Before Midterm Election.” Additionally, if, prior to November 2, 2026, 11:59 PM ET, a widespread consensus of credible reporting indicates that Markwayne Mullin will complete his term as United States Senator (e.g. if Mullin’s nomination as Secretary of Homeland Security is rejected or withdrawn and he announces he will complete his term), this market will resolve immediately to “None Before Midterm Election.” The primary resolution source for this market will be official information from the Government of Oklahoma; however, a consensus of credible reporting may also be used.On March 5, 2026, Donald Trump announced that the United States Senator from Oklahoma, Markwayne Mullin, will be appointed to replace Kristi Noem as United States Secretary of Homeland Security. This market will resolve according to the next person officially appointed by the Governor of Oklahoma, or otherwise formally selected according the jurisdiction's vacancy rules, to fill Markwayne Mullin’s seat as United States Senator from Oklahoma. Interim, Acting, or other temporary Senators appointed or elected to the role will count. If no replacement senator has been appointed or elected by November 2, 2026, 11:59 PM ET, this market will resolve to “None Before Midterm Election.” Additionally, if, prior to November 2, 2026, 11:59 PM ET, a widespread consensus of credible reporting indicates that Markwayne Mullin will complete his term as United States Senator (e.g. if Mullin’s nomination as Secretary of Homeland Security is rejected or withdrawn and he announces he will complete his term), this market will resolve immediately to “None Before Midterm Election.” The primary resolution source for this market will be official information from the Government of Oklahoma; however, a consensus of credible reporting may also be used.On March 5, 2026, Donald Trump announced that the United States Senator from Oklahoma, Markwayne Mullin, will be appointed to replace Kristi Noem as United States Secretary of Homeland Security. This market will resolve according to the next person officially appointed by the Governor of Oklahoma, or otherwise formally selected according the jurisdiction's vacancy rules, to fill Markwayne Mullin’s seat as United States Senator from Oklahoma. Interim, Acting, or other temporary Senators appointed or elected to the role will count. If no replacement senator has been appointed or elected by November 2, 2026, 11:59 PM ET, this market will resolve to “None Before Midterm Election.” Additionally, if, prior to November 2, 2026, 11:59 PM ET, a widespread consensus of credible reporting indicates that Markwayne Mullin will complete his term as United States Senator (e.g. if Mullin’s nomination as Secretary of Homeland Security is rejected or withdrawn and he announces he will complete his term), this market will resolve immediately to “None Before Midterm Election.” The primary resolution source for this market will be official information from the Government of Oklahoma; however, a consensus of credible reporting may also be used.

Trump's recent nomination of Sen. Markwayne Mullin for Small Business Administration administrator has fueled speculation on a potential Oklahoma Senate vacancy, with trader consensus favoring House Speaker Charles McCall at 34.6% and State Superintendent Ryan Walters at 28.3% for Gov. Kevin Stitt's interim appointment. The tight race reflects competing GOP factions: McCall's legislative clout and fundraising prowess versus Walters' Trump-aligned populist appeal, while AG Gentner Drummond and Lt. Gov. Matt Pinnell trail amid their independent profiles. No Stitt endorsement yet keeps odds bunched; separation could come from gubernatorial signals, Mullin's Senate confirmation timeline starting January 2025, or factional endorsements before midterms.

Experimental AI-generated summary referencing Polymarket data · Updated

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Frequently Asked Questions

"Who will replace Mullin as Oklahoma Senator?" is a prediction market on Polymarket with 8 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "Charles McCall" at 35%, followed by "Ryan Walters" at 28%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 35¢ implies that the market collectively assigns a 35% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

As of today, "Who will replace Mullin as Oklahoma Senator?" has generated $26.9K in total trading volume since the market launched on Mar 5, 2026. This level of trading activity reflects strong engagement from the Polymarket community and helps ensure that the current odds are informed by a deep pool of market participants. You can track live price movements and trade on any outcome directly on this page.

To trade on "Who will replace Mullin as Oklahoma Senator?," browse the 8 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "Who will replace Mullin as Oklahoma Senator?" is "Charles McCall" at 35%, meaning the market assigns a 35% chance to that outcome. The next closest outcome is "Ryan Walters" at 28%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "Who will replace Mullin as Oklahoma Senator?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.