Hamburg court rejects challenge to basic income referendum after 357,619 No votes

Constitutional court upholds referendum outcome

The Hamburg Constitutional Court dismissed legal complaints on Friday seeking to invalidate the October 2025 referendum on a state-run basic income pilot project. Five applicants, representing the organizers and supporters of the initiative "Hamburg testet Grundeinkommen", had demanded a repeat of the popular vote. The judges determined that the failed ballot remains legally valid, ruling that identified procedural shortcomings were not grave enough to justify setting aside the democratic vote retroactively. Court President Birgit Voßkühler announced the final ruling during the public court session in Hamburg.

The applications are rejected.

Allegations of government interference and campaign flaws

The legal challenge arose from disputes surrounding the campaign conduct of the Hamburg Senate and the governing parliamentary coalition composed of the Social Democratic Party (SPD) and the Green Party. The organizers alleged that state authorities intervened unlawfully in the voting campaign and breached mandatory requirements of neutrality and objectivity. Complainants specifically cited public critical remarks from Finance Senator Andreas Dressel (SPD) and objected to statements published by the coalition in the official voter pamphlet. Additionally, the initiative criticized the early dispatch of postal voting documents, arguing that citizens were able to cast ballots before the group could display promotional posters across the city without a permit. The initiative had proposed a three-year trial providing an unconditional basic income to 2,000 representatively selected Hamburg residents.

Misleading cost calculations ruled insufficient to overturn vote

The constitutional court did identify a specific flaw in the official information booklet, finding that the SPD and Greens presented the financial costs of the trial project in a misleading manner. Judges affirmed that this passage constituted a partial failure to adhere to the standard of factual objectivity expected from parliamentary factions. Under Hamburg constitutional law, however, a referendum can only be overturned after the fact if an error could have realistically altered the outcome of the ballot. The court expressed substantial doubt regarding any decisive impact, noting that the measure was defeated by a wide margin. In the referendum on 12 October 2025, 357,619 citizens voted No, while 212,680 voted Yes, missing the required approval quorum. Opponents represented 62.7% of votes cast against 37.3% in favor, with separate official tabulations recording 62.6% No to 37.4% Yes.

Judicial boundaries established for future popular votes

The ruling established legal guidelines defining the permissible role of the executive branch and governing parties during future referendums in Hamburg. The applicants contended that the Senate was legally required to abstain entirely from presenting its own evaluations or public assessments. The constitutional court explicitly rejected that position, holding that Senate members are permitted to voice political stances in their roles as government officials and party politicians. Furthermore, the court ruled that the early distribution of postal ballots did not impair electoral freedom. Voters had access to the full draft law and balanced arguments from both supporters and opponents in the official booklet, meaning preliminary poster displays in public spaces were not a mandatory precondition for an informed vote.