Sweden's parliamentary elections have produced voter turnout rates between 84% and 87% in recent cycles, with the 2022 result at 84.2%. The September 13, 2026, contest followed this pattern after strong advance voting participation and steady mobilization across demographic groups. Final official figures placed turnout at 84.9%, aligning precisely with the market's dominant 84-86% band. Traders assigned near-certainty to this range because Sweden maintains high baseline participation in Riksdag elections under its fixed electoral calendar, and no late developments—such as weather disruptions, major scandals, or shifts in early-vote volume—pointed to a material deviation. Outcomes outside 82-88% would require unusual circumstances like sharply lower engagement in urban districts or unexpectedly high absentee rates, neither of which materialized in verified counts.