**Recent polling trends indicate CDU support in Berlin has stabilized near or below 20% ahead of the September 20, 2026, Abgeordnetenhaus election.** Aggregated surveys from institutes including Forsa, INSA, Infratest dimap, and Civey (July–August 2026) place the party at 18–20%, often tied with or trailing Die Linke (19–22%) while AfD sits at 17–18%, the Greens at 16%, and SPD at 12–15%. This marks a substantial decline from the CDU’s 28.2% result in the 2023 repeat election. The shift reflects Die Linke’s consistent gains under candidate Elif Eralp and the CDU’s challenges maintaining its prior lead after replacing governing mayor Kai Wegner with Stefan Evers as lead candidate in July. That change produced a short-term lift to around 20% in mid-July polls, but subsequent surveys show the party settling back into the 18–20% range. The incumbent CDU–SPD coalition would currently lack a majority, and no two-party combination reaches one in most projections. Trader consensus favoring “Under 20%” at 65.5% aligns with this evidence of CDU erosion in a fragmented field where multiple parties cluster tightly between roughly 12% and 22%. Late-campaign developments, turnout patterns, or coalition signaling could still influence the final result.