Sweden's parliamentary election on September 13 features a tight contest between the centre-left opposition and the ruling right-wing bloc including the Sweden Democrats, with recent polls showing narrow leads and bloc gaps under three points. This competitiveness, combined with Sweden's established pattern of high electoral participation driven by strong civic engagement and accessible early voting, supports trader consensus around 84-86% turnout. The race's mobilization effects and absence of major disruptions in the final weeks reinforce positioning in the mid-80s range, while historical benchmarks from prior cycles limit odds of significant deviation absent late surprises in participation among key voter groups.