Trader consensus favors CDU at 40% implied probability to win the most seats in Berlin's September 20 Abgeordnetenhaus election under proportional representation, buoyed by incumbency under Governing Mayor Kai Wegner despite a narrowing lead in recent polls. The latest Infratest dimap/rbb survey (April 23-27, released April 29) shows CDU slipping to 19% amid a four-way tie with Grüne, Die Linke, and AfD at 18% each, boosting their respective odds to 17-19% as opposition gains from black-red coalition fatigue. SPD lags at 14% and 8% probability, hurt by national trends. Voter discontent stems from Wegner's crisis management in January's major power grid arson attack—where he played tennis during the blackout—plus April outages, icy road chaos, and subsidy scandals.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedCDU leader Kai Wegner approved as Berlin mayor after coalition talks, confirming CDU dominance and limiting SPD's influence in Berlin government
SPD rises to 8%1%
CDU leader Kai Wegner approved as Berlin mayor after coalition talks, confirming CDU dominance and limiting SPD's influence in Berlin government
BSW beschließt Wahlprogramm für Berliner Abgeordnetenhauswahl mit Fokus auf Mindestlohn, Mietendeckel und Friedenspolitik
BSW dips to 0%1%
Der Landesparteitag in Berlin-Lichtenberg verabschiedete das Wahlprogramm, das soziale und friedenspolitische Themen betont, jedoch ohne signifikante Umfrageverbesserungen, was den Preis weiter auf Null drückte.
Polls show slight recovery for Greens in Berlin to around 15-17%, possibly due to campaign efforts and leadership stabilization, but still far from frontrunner status
Grüne rises to 17%4%
Polls show slight recovery for Greens in Berlin to around 15-17%, possibly due to campaign efforts and leadership stabilization, but still far from frontrunner status
Berlin poll by Civey shows SPD at 16%, trailing CDU at 23%, with AfD and Die Linke close behind, indicating SPD's continued weak position in the race
SPD rises to 9%3%
Berlin poll by Civey shows SPD at 16%, trailing CDU at 23%, with AfD and Die Linke close behind, indicating SPD's continued weak position in the race
Rhineland-Palatinate state election results show SPD and CDU neck-and-neck, with Greens failing to make significant gains, dampening expectations for Berlin
Grüne drops to 13%6%
Rhineland-Palatinate state election results show SPD and CDU neck-and-neck, with Greens failing to make significant gains, dampening expectations for Berlin
Media coverage highlights Greens' victory in Baden-Württemberg as a "bitter result" for Chancellor Merz's CDU, boosting Greens' profile nationally but not enough to reverse Berlin
Grüne jumps to 19%7%
Media coverage highlights Greens' victory in Baden-Württemberg as a "bitter result" for Chancellor Merz's CDU, boosting Greens' profile nationally but not enough to reverse Berlin market decline
Greens narrowly win Baden-Württemberg state election under Cem Özdemir, gaining 32% against CDU's 29%, a positive signal for the party's regional strength but limited effect on
Grüne jumps to 12%6%
Greens narrowly win Baden-Württemberg state election under Cem Özdemir, gaining 32% against CDU's 29%, a positive signal for the party's regional strength but limited effect on Berlin market pricing
SPD and CDU begin negotiations for a grand coalition in Berlin, with CDU leader Kai Wegner positioned to become mayor, reducing SPD's chances of leading government
SPD rises to 8%2%
SPD and CDU begin negotiations for a grand coalition in Berlin, with CDU leader Kai Wegner positioned to become mayor, reducing SPD's chances of leading government
BSW reicht Wahlprüfungsbeschwerde beim Bundesverfassungsgericht ein
BSW jumps to 6%5%
Nach der Ablehnung der Neuauszählung durch den Bundestag reichte das BSW Mitte Februar 2026 eine Wahlprüfungsbeschwerde ein, was kurzfristig Hoffnungen auf eine politische Wende weckte und den Preis kurzzeitig steigen ließ.
Announcement of Franziska Brantner and Felix Banaszak as new co-leaders of the Greens in November 2024, aiming to revitalize the party ahead of state elections, but with limited
Grüne jumps to 16%11%
Announcement of Franziska Brantner and Felix Banaszak as new co-leaders of the Greens in November 2024, aiming to revitalize the party ahead of state elections, but with limited immediate polling impact
BSW Berlin stellt Spitzenkandidaten Alexander King und Michael Lüders für Abgeordnetenhauswahl vor
BSW dips to 0%1%
Der Berliner Landesverband präsentierte seine Spitzenkandidaten, doch die Partei lag in Umfragen weiterhin unter der Fünf-Prozent-Hürde, was die Markterwartungen auf einen Einzug ins Parlament weiter reduzierte.
Bundestag lehnt Neuauszählung der Bundestagswahl ab – BSW kündigt Verfassungsbeschwerde an
BSW plunges to 1%49%
Der Bundestag wies den Antrag des BSW auf Neuauszählung der Bundestagswahl ab, was die Partei als machtpolitisch motiviert kritisierte und Widerstand ankündigte. Dies schwächte die politische Position des BSW und führte zu einem starken Preisverfall im Markt.
Polls show CDU surging as frontrunner in Berlin election with around 22% support, signaling strong conservative momentum ahead of 2026 vote
CDU jumps to 58%8%
Polls show CDU surging as frontrunner in Berlin election with around 22% support, signaling strong conservative momentum ahead of 2026 vote
Berlin Senate announces 2026 election date for September 20, confirming regular election schedule and starting official campaign period
Linke plunges to 30%20%
The Berlin Senate fixed the 2026 Abgeordnetenhaus election date, setting the stage for formal campaigns and polling, which began to reflect more realistic voter preferences, causing an initial drop in Linke's market
AfD achieves record 20.8% vote and second place in 2025 German federal election, winning constituencies in eastern Germany including Berlin for the first time
AfD plunges to 6%44%
The AfD's strong federal election result, especially in eastern Berlin, initially boosted market confidence in their Berlin election chances, but the sharp.
SPD suffers historic low in 2023 Berlin repeat state election with only 18.4% of votes, barely ahead of the Greens, signaling a significant decline in voter support
SPD plunges to 9%41%
SPD suffers historic low in 2023 Berlin repeat state election with only 18.4% of votes, barely ahead of the Greens, signaling a significant decline in voter support
2025 German federal election results show Greens decline from 15% to 12%, their second-best ever but a setback from previous polling highs, signaling reduced national momentum for
Grüne plunges to 16%34%
2025 German federal election results show Greens decline from 15% to 12%, their second-best ever but a setback from previous polling highs, signaling reduced national momentum for the party











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