Oklahoma Governor Republican Primary
Short Answer
1. Market Behavior & Drivers
- Mike Mazzei has Governor Kevin Stitt's endorsement and significant pre-primary loans.
- Gentner Drummond led the June 16 primary; a mid-August poll shows a deadlocked runoff.
Current Context
Sources (10)
- 1OK election results show 2 GOP governor candidates advanceoklahoman.com
- 2Mazzei and Drummond head to Oklahoma GOP runoffoklahoman.com
- 32 Republicans advance to August runoffs for Oklahoma governor | KOSUkosu.org
- 4Oklahoma gubernatorial election, 2026ballotpedia.org
- 5Oklahoma gubernatorial election, 2026 (August 25...ballotpedia.org
- 6Gentner Drummond (R) and Mike Mazzei (R) campaign on experience and Trump support in the August 25 Republican runoff for Oklahoma governor - Ballotpedia Newsnews.ballotpedia.org
- 72026 Election Results - Oklahoma.govoklahoma.gov
- 82026 Statutory Election Dates and Deadlinesoklahoma.gov
- 9Oklahoma elections, 2026ballotpedia.org
- 10Trump-backed candidate wins Oklahoma Republican gubernatorial primary | Fox Newsfoxnews.com
2. Price Chart
Historical Price (Probability)
3. Significant Price Movements
Notable price changes detected in the chart, along with research into what caused each movement.
📈 August 18, 2026: 18.1pp spike
Price increased from 54.5% to 72.5%
Outcome: Mike Mazzei
📉 August 17, 2026: 19.9pp drop
Price decreased from 74.4% to 54.5%
Outcome: Mike Mazzei
Sources (7)
- 1Gentner Drummond (R) and Mike Mazzei (R) campaign on experience and Trump support in the August 25 Republican runoff for Oklahoma governor - Ballotpedia Newsnews.ballotpedia.org
- 2Mazzei and Drummond head to Oklahoma GOP runoffoklahoman.com
- 3Previewing the Republican Runoff for Governor - Oklahoma Gazetteokgazette.com
- 4Mazzei, Drummond in dead heat in race for Oklahoma governor, poll showsoklahoman.com
- 5Mazzei questions poll showing him tied with Drummond in governor's raceoklahoman.com
- 6Oklahoma gubernatorial election, 2026 (August 25...ballotpedia.org
- 7The national focus on politicians' health is making its way into the Oklahoma GOP race for governor • Oklahoma Voiceoklahomavoice.com
4. Market Data
Contract Snapshot
This prediction market resolves to the winner of the Republican Primary for Governor of Oklahoma, including any run-off elections. The primary is scheduled for June 16, 2026, and the market concludes by August 25, 2026. If no primary occurs or if the nominee is chosen by a different method, the market will resolve to the winner of that alternative method, or to "Other" if no primary takes place at all. Official results from the Oklahoma Republican Party will be the primary source for resolution.
Market Discussion
Mike Mazzei currently holds a strong lead in the prediction market (73%), driven by his Trump endorsement, prior political experience, and focus on tax cuts and education reform. Gentner Drummond (27%), the sitting attorney general, trails despite his statewide profile and focus on cost-of-living issues. Market pricing notably diverges from recent polls indicating a tied race, suggesting traders are prioritizing endorsement effects and base turnout over survey data.
5. Trader Dashboard
6. How do Gentner Drummond's and Mike Mazzei's campaign fundraising and spending compare in the period between the June primary and the August runoff?
| Mazzei Campaign Loan (pre-primary) | Approximately $10.9 million [1][2][3][4][5] |
|---|---|
| Drummond Campaign Loan (pre-primary) | $2.5 million [1][2][3][4][5] |
| Drummond Individual Contributions (April-June) | Over $400,000 [6][3] |
Sources (10)
- 1Behind the business portfolios of Drummond, Mazzei in...oklahoman.com
- 2Mazzei and Drummond head to GOP runoff for governortulsaflyer.org
- 3Oklahoma governor candidates funnel $22 million in...oklahomavoice.com
- 4Rep. Kevin Hern wins Oklahoma GOP nomination for US Senate, governor's race heads to runoffbeaumontenterprise.com
- 5Oklahoma governor candidates face off as primary voting begins: Liveoklahoman.com
- 6Who endorsed Mike Mazzei? Who endorsed Gentner Drummond?oklahoman.com
- 7Gentner Drummond (R) and Mike Mazzei (R) campaign on...news.ballotpedia.org
- 8The cost to overcome a Trump endorsement? $100 million...ap.org
- 9Oklahoma gubernatorial election, 2026 (August 25...ballotpedia.org
- 10Oklahoma gubernatorial election, 2026 (June 16...ballotpedia.org
7. Which former Republican primary candidates have endorsed either Gentner Drummond or Mike Mazzei ahead of the August 25 runoff?
| Runoff Candidates | Gentner Drummond and Mike Mazzei (August 25, 2026 Republican primary runoff) [1][2][3] |
|---|---|
| Governor Stitt's Endorsement | Switched from Chip Keating to Mike Mazzei (following June 16 primary) [4] |
| Other Primary Candidate Endorsements | None reported for either runoff contender from the other seven candidates (as of August 18, 2026) [5][4][3] |
Sources (5)
- 1Oklahoma gubernatorial election, 2026 (August 25...ballotpedia.org
- 2Gentner Drummond (R) and Mike Mazzei (R) campaign on...news.ballotpedia.org
- 3Elections Ballotpedia is covering in August 2026 - Ballotpedia Newsnews.ballotpedia.org
- 4Who endorsed Mike Mazzei? Who endorsed Gentner Drummond?oklahoman.com
- 5Oklahoma gubernatorial election, 2026ballotpedia.org
8. What do public opinion polls indicate about the head-to-head matchup between Drummond and Mazzei for the August 25 Republican runoff?
| Gentner Drummond Support | 44% (mid-August 2026 poll) [1] |
|---|---|
| Mike Mazzei Support | 44% (mid-August 2026 poll) [1] |
| Undecided Voters | 12% (mid-August 2026 poll) [1] |
Sources (5)
- 1New independent poll shows Oklahoma Republican...kfor.com
- 22026 Oklahoma Governor | Live Election Resultsvotes.decisiondeskhq.com
- 3Oklahoma gubernatorial election, 2026 (August 25...ballotpedia.org
- 4Oklahoma governor candidates face off as primary voting begins: Liveoklahoman.com
- 5Mazzei, Drummond advance to runoff election for Oklahoma governor | KGOU - Oklahoma's NPR Sourcekgou.org
9. What do historical Oklahoma primary runoff results suggest about voter turnout and candidate performance shifts between the initial primary and the runoff?
| Voter turnout decline in runoffs | Often by as much as 40 percent [1][2][3] |
|---|---|
| Come-from-behind victories in runoffs | Approximately 32% of races [3] |
| 2016 State Senate District 41 runoff winner | Adam Pugh (second-place in primary) [4] |
Sources (14)
- 1Runoff elections across the stateeu.oklahoman.com
- 2Repairing Oklahoma's Broken Democracyokpolicy.org
- 3Primary Runoff Elections and Decline in Voter Turnout...fairvote.org
- 4Oklahoma State Senate District 41 - Ballotpediaballotpedia.org
- 5Oklahoma State Senate District 4 - Ballotpediaballotpedia.org
- 6Oklahoma House of Representatives District 100 - Ballotpediaballotpedia.org
- 7Oklahoma House of Representatives District 17 - Ballotpediaballotpedia.org
- 8Oklahoma House of Representatives District 82 - Ballotpediaballotpedia.org
- 9Previewing the Republican Runoff for Governorokgazette.com
- 102 Republicans advance to August runoffs for Oklahoma governor | KOSUkosu.org
- 11Mazzei, Drummond advance to runoff election for Oklahoma governorpublicradiotulsa.org
- 12What is a runoff? What to know ahead of Oklahoma's next vote in Augustoklahoman.com
- 13Oklahoma gubernatorial election, 2026 (August 25...ballotpedia.org
- 14Republican Party primaries in Oklahoma, 2026ballotpedia.org
10. What are the key themes and potential turning points from scheduled debates between Drummond and Mazzei before the August 25 runoff?
| Final Televised Debate Date | August 3, 2026 [1][2] |
|---|---|
| Polling Results (Mid-August 2026) | 44% each [3] |
| Undecided Voters (Mid-August 2026) | 12% [3] |
Sources (6)
- 1From Roger Stone to the Inola Smelter: Fact-Checking...oklahomawatch.org
- 2Mazzei, Drummond trade insults in Republican governor's...oklahoman.com
- 3New independent poll shows Oklahoma Republican...kfor.com
- 4Drummond and Mazzei face off Aug. 25. Here's where they...journalrecord.com
- 5Oklahoma governor candidates face off as primary voting begins: Liveoklahoman.com
- 6Gentner Drummond (R) and Mike Mazzei (R) campaign on...news.ballotpedia.org
11. What Could Change the Odds
Key Catalysts
Key Dates & Catalysts
- Closes: August 25, 2026
Sources (9)
- 12026 Oklahoma gubernatorial electionen.wikipedia.org
- 2Governor of Oklahomaen.wikipedia.org
- 3Kevin Stittballotpedia.org
- 4Gentner Drummond (R) and Mike Mazzei (R) campaign on experience and Trump support in the August 25 Republican runoff for Oklahoma governor - Ballotpedia Newsnews.ballotpedia.org
- 5Oklahoma gubernatorial election, 2026ballotpedia.org
- 6Oklahoma gubernatorial election, 2026 (June 16...ballotpedia.org
- 72026 Oklahoma Governor | Live Election Resultsvotes.decisiondeskhq.com
- 8Oklahoma State Election Board (0270)oklahoma.gov
- 9Oklahoma elections, 2026ballotpedia.org