Byron Lowell Donalds is an American politician serving as the U.S. representative for Florida's 19th congressional district since 2021. His congressional district includes much of Southwest Florida. From 2016 to 2020, he served in the Florida House of Representatives. Wikipedia
Official website ↗Florida
Byron Donalds wins in 77 of 100 simulations.
The polling average has Byron Donalds +3.3 across 11 polls; partisan lean, the national environment and incumbency point to David Jolly +2.1. Polls get 92% of the weight 15 days out.
Where the result could land
Every simulated outcome, grouped in 2-point steps. Projected margin Donalds +2.9; 80 in 100 fall between Donalds +8.0 and Jolly +2.1.
The candidates
David Wilson Jolly is an American lawyer and politician who is the Democratic nominee for the 2026 Florida gubernatorial election. Jolly served as the U.S. representative for Florida's 13th congressional district from 2014 to 2017 as a Republican. Wikipedia
Official website ↗Ballot list and short bios from Wikipedia (CC BY-SA); websites from Wikidata.
Polls
The polling average stands at Donalds +3.4 across 11 polls testing David Jolly against Byron Donalds.
Line: weighted average after adjustments; band: 95% range of the average; dots: individual polls after adjustments.
| Pollster | Dates | Sample | Result | Adjusted | Weight |
|---|---|---|---|---|---|
| Change ResearchB− · DEM sponsor for Freedom Project USA | Oct 8–Oct 10 | 920 LV | Jolly +0.0 | Donalds +1.9 | 0.19 |
| MDW Communications for EDGE Communications | Oct 4–Oct 10 | 2,351 LV | Donalds +2.0 | Donalds +2.7 | 0.87 |
| St. Pete PollsB− for Florida Politics | Oct 5–Oct 7 | 836 LV | Jolly +0.0 | Donalds +1.9 | 0.40 |
| Targoz Market ResearchC+ for The James Madison Institute | Sep 28–Oct 4 | 857 LV | Donalds +10.0 | Donalds +7.1 | 0.21 |
| Targoz Market ResearchC+ | Sep 28–Oct 4 | 1,200 RV | Donalds +9.0 | Donalds +6.1 | 0.24 |
| Change ResearchB− for Freedom Project USA | Sep 25–Sep 27 | 1,063 LV | Jolly +2.0 | Jolly +0.1 | 0.22 |
| Stetson University Center for Public Opinion ResearchB+ | Sep 14–Sep 21 | 830 LV | Donalds +12.0 | Donalds +9.4 | 0.25 |
| St. Pete PollsB− for Florida Politics | Sep 15–Sep 17 | 913 LV | Donalds +0.1 | Donalds +1.4 | 0.16 |
| Change ResearchB− for Freedom Project USA | Sep 7–Sep 9 | 1,107 LV | Jolly +3.0 | Jolly +2.0 | 0.09 |
| Targoz Market ResearchC+ for The James Madison Institute | Jul 20–Jul 26 | 1,026 RV | Donalds +7.0 | Donalds +2.8 | 0.01 |
| University of North FloridaA− | Jul 8–Jul 17 | 848 LV | Donalds +5.0 | Donalds +2.3 | 0.01 |
| Change ResearchB− for Freedom Project USA | May 13–May 16 | 1,593 LV | Jolly +4.0 | Jolly +3.2 | 0.00 |
| Cherry CommunicationsD · REP sponsor for Florida Chamber of Commerce | May 1–May 9 | 604 LV | Donalds +8.0 | Donalds +5.7 | 0.00 |
| The Public Sentiment Institute | Apr 27–Apr 27 | 687 LV | Jolly +0.0 | Donalds +0.1 | 0.00 |
| Echelon InsightsA− for NetChoice | Apr 3–Apr 9 | 406 LV | Donalds +6.0 | Donalds +3.1 | 0.00 |
| MDW Communications for Edge Communications | Mar 27–Apr 3 | 1,834 LV | Donalds +0.7 | Jolly +0.4 | 0.00 |
| Emerson CollegeA− | Mar 29–Mar 31 | 1,125 LV | Donalds +4.8 | Donalds +2.5 | 0.00 |
| University of North FloridaA− | Feb 21–Mar 2 | 786 LV | Donalds +6.0 | Donalds +2.9 | 0.00 |
| Public Sentiment Institute | Feb 20–Feb 20 | 200 RV | Jolly +6.5 | Jolly +7.0 | 0.00 |
| Targoz Market ResearchC+ | Feb 13–Feb 16 | 1,200 RV | Donalds +2.0 | Jolly +2.9 | 0.00 |
| University of North FloridaA− · DEM sponsor for Florida Watch | Oct 15–Oct 25 | 728 LV | Donalds +11.0 | Donalds +6.9 | 0.00 |
| Targoz Market ResearchC+ for James Madison Institute | Sep 16–Sep 18 | 1,118 RV | Donalds +4.0 | Jolly +1.7 | 0.00 |
| McLaughlin & AssociatesD · REP sponsor for Associated Industries of Florida | Aug 25–Aug 27 | 800 LV | Donalds +8.0 | Donalds +1.6 | 0.00 |
| Victory InsightsB | Jun 7–Jun 10 | 600 LV | Donalds +5.3 | Donalds +1.2 | 0.00 |
Chance of winning over time
How this race’s odds have moved as polls and the national environment changed.
Out of 100. Today: Jolly 23, Donalds 77.
What’s driving the forecast
The model blends each estimate by how much to trust it right now. Polls get 92% of the weight, 15 days out.
| Polling average (after adjustments) | Donalds +3.4 | ±2.8 sampling range; effective 5.8 polls |
| Partisan lean (Cook PVI, 2026 lines) | R+5.0 | roughly 10 points of margin vs. the nation |
| National environment | D+9.6 | generic ballot + presidential approval |
| Incumbency | none | open seat or incumbent not on ballot |
| Fundamentals estimate | Jolly +2.1 | ±14 typical error |
| Expert ratings (average) | Donalds +5.1 | used only in the “+ Expert ratings” version |
| Forecast | Donalds +2.9 | ±3.9 standard deviation, including 2.3 for movement before Election Day |
All three versions
- Polls only: David Jolly 20 in 100 (Likely R)
- Polls + fundamentals: David Jolly 23 in 100 (Likely R)
- Polls + fundamentals + experts: David Jolly 17 in 100 (Likely R)
Published ratings
Other forecasters’ ratings, as listed on Wikipedia. Shown for comparison; they feed only the “+ Expert ratings” version.
County map
Counties colored by the 2024 presidential vote; on election night this switches to the live count in this race.
2024 results: Fox News 2024 county results, compiled by Tony McGovern (github.com/tonmcg/US_County_Level_Election_Results_08-24). Not authoritative.
Rules and notes
- Term-limited
Governor races, closest first · this is #7 of 36