Recent polling for Sweden’s September 13 parliamentary election shows the Social Democrats (S) hovering near the 31% threshold, with the latest Demoskop survey placing them at 30.2% and earlier July and June figures ranging from 31.3% to 32.5%. This narrow band around the cutoff, combined with the party’s position as the largest in a fragmented multiparty system, sustains trader uncertainty reflected in the closely balanced over/under odds. Key influences include bloc competition between the centre-left opposition and the incumbent Tidö government, persistent gender divides in voter preferences, and the 4% threshold’s impact on smaller parties that could indirectly affect S seat projections. Late-campaign developments such as additional polling releases, turnout patterns, or shifts in economic or crime-related voter priorities could move S support decisively above or below the line before election day.