Florida's 2026 U.S. Senate special election between Republican incumbent Ashley Moody and Democrat Angie Nixon features closely bunched probabilities across the 7.5M–8.25M turnout range due to uncertainty over no-party-affiliation voter mobilization and partisan enthusiasm gaps. The August 18 primary produced just 25% statewide participation with Republicans casting a disproportionate share of ballots, underscoring registration and turnout advantages that have persisted since 2024. Midterm patterns, early and mail voting trends, and the state's rightward shift keep the outcome sensitive to get-out-the-vote intensity among independents and key demographics before November 3. Separation could emerge from stronger than expected NPA engagement or shifts in enthusiasm driven by national conditions and candidate-specific efforts.