In the 2023 Berlin repeat state election With 28% of votes, the opposition Christian Democratic Union (CDU) grew by over ten percentage points and emerged as the largest party by a wide margin, the first time it had done so since 1999.
All three governing parties declined; the SPD suffered its worst result in over a century with 18.4%, and only barely remained ahead of the Greens by a margin of 53 votes.
The Alternative for Germany (AfD) recorded a small upswing to 9%, while the Free Democratic Party (FDP) fell to 4.6% and lost all their seats.
52 members are then allocated using compensatory proportional representation, distributed in each of Berlin's twelve boroughs.
However, parties which win at least one single-member constituency are exempt from the threshold and will be allocated seats proportionally, even if they fall below 5%.