The dataset contains responses of 30,062 individuals serving as elected councillors in municipalities across 28 European countries (Andorra, Austria, Belgium, Bosnia and Herzegovina, Croatia, Czechia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Israel, Italy, Latvia, Lithuania, North Macedonia, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom). Data was collected between June 2023 and July 2024 by a consortium of numerous researchers across the participating countries using a uniform questionnaire and a shared electronic data collection system. In order to disclose the identity of the respondents, context data has been anonymized to an extent where tracking back of single individuals is not possible.