The Partido Popular (PP) in Spain has threatened legal action against the Ministry of Foreign Affairs if it does not remove 163,020 naturalized citizens from the electoral roll. This action stems from the controversial “grandchild law,” which facilitated citizenship for descendants of Spanish exiles. The PP sent a formal notice – a *burofax* – to the Director-General for Spaniards Abroad and Consular Affairs demanding compliance with a recent Supreme Court ruling. The ruling mandates the removal of those nationalized under this specific law from the census. The PP argues the law was improperly applied and the current registrations are invalid. Failure to comply, the PP warns, will result in criminal charges being filed against the ministry. This dispute centers on the rights of individuals who gained Spanish nationality through the ‘ley de nietos’ and its impact on electoral legitimacy.