These datasets offer an overview of how much Swiss political parties spent on online ads on Meta platforms (Facebook, Instagram and Whatsapp) campaigning for referendums between September 2020 and June 2023.
Additionally, it has a modified version of the Voting Monitor dataset by Udris (2023, https://www.zora.uzh.ch/id/eprint/236162/) that focuses on the media contributions published in the run-up to these referendums, while adding additional variables that focus on the timing of these publications.