What happened
Byron Donalds won Florida's Republican primary for governor on August 18, 2026, securing roughly 48% of the vote in a crowded GOP field and confirming what markets had priced at 99% the day before. Backed by President Donald Trump's endorsement, Donalds will face Democrat David Jolly in the general election to succeed term-limited Ron DeSantis.
Sources: nbcnews.com · wtsp.com · nbcmiami.com
Written Aug 19, 2026 from news coverage · final prices in the table below
| Outcome |  Polymarket |  Kalshi | Spread |
|---|---|---|---|
Byron DonaldsWinner | 100%settled | 100%settled | - |
 Paul Renner | - | 0%settled | - |
Charles Burkett | - | 0%settled | - |
 James Fishback | 0%settled | 0%settled | - |
 Jay Collins | 0%settled | 0%settled | - |
 Casey DeSantis | 0%— | 0%settled | - |
 Wilton Simpson | 0%— | 0%settled | - |
 Jimmy Patronis | 0%— | 0%settled | - |
 Matt Gaetz | 0%— | 0%settled | - |
Background, methodology, and platform context
Florida Governor Republican Primary 2026 has resolved with Byron Donalds as the winner. $415.8K was traded across Polymarket and Kalshi on 9 outcomes. This page preserves the final odds comparison for historical reference.
Descriptions normalized for comparison (outcome names replaced with [OUTCOME])
This market will resolve according to the winner of the Republican Primary for Governor of Florida, scheduled to take place on August 18, 2026. If no 2026 Florida Republican Gubernatorial Primary takes place, this market will resolve to “Other.” The resolution source for this market will be the first official announcement of the results from the Florida Republican Party; however, an overwhelming consensus of credible reporting may suffice.
If Charles Burkett wins the nomination for the Republican Party to contest the 2026 Florida Governorship, then the market resolves to Yes.
Different platforms may use different resolution criteria, data sources, and settlement timelines.
