**Recent polling trends strongly favor Die Linke over the SPD for the September 20, 2026, Berlin Abgeordnetenhaus election.** Multiple surveys conducted in July and August 2026, including Forsa (Linke 22%, SPD 12%), INSA, Civey, and Infratest dimap, show Die Linke consistently leading with 19–22% support while the SPD trails at 12–15%. This gap has widened in the most recent fieldwork, reflecting Linke gains of several points since spring and SPD losses relative to the 2023 repeat election results (Linke 12.2%, SPD 18.4%). Die Linke’s momentum stems from steady growth in voter intention, membership expansion to become Berlin’s largest party by mid-2026, and positive positioning for its top candidate Elif Eralp. In contrast, the SPD—junior partner in the incumbent CDU–SPD coalition—has seen support erode amid broader dissatisfaction with the governing record. Aggregated trends place Linke roughly 6–10 points ahead of the SPD in late-August polling, a margin that aligns with the high implied probability traders assign to Linke receiving more votes. The contest remains weeks from election day, and final turnout, late shifts among undecided voters, or coalition signaling could narrow the gap. Current trader consensus tracks the sustained polling differential between the two parties.