Sweden's parliamentary election on September 13 features expected voter turnout centered on historical patterns, with the 2022 result at 84.2% serving as the key benchmark. Record advance voting—nearly one million ballots cast early, up 40% from the prior cycle—signals elevated engagement driven by the tight contest between the centre-left opposition and the incumbent right-wing bloc backed by the Sweden Democrats. This dynamic, alongside consistent polling showing narrow leads and high stakes over government formation and policy shifts on immigration and security, supports trader consensus around the 84-86% range while leaving room for modest upside into the 86-88% band if final-day participation follows the early trend. Structural factors such as Sweden's proportional system and stable eligible voter base limit extreme deviations.