BLUE_EP is the first Europe-wide dataset of municipality-level results of European Parliament (EP) elections.Currently, BLUE_EP covers the 2019 and 2024 EP elections and provides results for approximately 90,000 spatial units in the EU27 and 500 parties or lists in each election. BLUE_EP’s spatial typology is based on the Eurostat’s Local Administrative Units (LAUs) extended to cover recently created municipalities, Overseas Countries and Territories (OCTs), postal vote, voting stations abroad, and special electoral districts used in the 4 member-states without LAU-level data (Greece, Ireland, Malta, Slovenia). This allows for seamless integration with Eurostat’s regional and local databases. All political parties in BLUE_EP are associated with their Party Facts identifiers (if any) and further classified by EP political groups and broader political families. The dataset was constructed by carefully collecting, harmonizing, and merging 27 national datasets.To cite this dataset:Hublet, F. (2024). BLUE_EP: A Dataset of Municipality-Level Results of European Parliament Elections. Codebook v1. Paris: Groupe d’études géopolitiques. 10.5281/zenodo.14569325A preliminary analysis of the result of the 2024 EP election based on BLUE_EP data, including various graphs and maps, can be found inHublet, F. (2024). 10 Key Lessons of the 2024 European Parliament Election. Special dossier: 2024 European Parliament Election. Electoral Bulletins of the European Union (BLUE) 5. Paris: Groupe d'études géopolitiques. BLUE_EP is a project of the Electoral Bulletins of the European Union (BLUE), a journal published by the independent think-tank Groupe d’études géopolitiques.