This book constitutes the proceedings of the 12th IFIP WG 8.5 International Conference on Electronic Participation, ePart 2019, held in Linköping, Sweden, in August/September 2020, in conjunction with the 19th IFIP WG 8.5 IFIP International Conference on Electronic Government (EGOV 2020) and the International Conference for E-Democracy and Open Government Conference (CeDEM 2020). The conference was held virtually due to the COVID-19 pandemic.

eParticipation Developments.- An Attempt to Build an eParticipation Program from Scratch: the Case of a Budapest District Municipality.- Trust in citizens and new forms of citizen participation: The view of public managers.- Digital Transformation.- Investigation of interoperability governance: The case of a Court Information System.- Making e-Government Work Learning from the Netherlands and Estonia.- Theoretical Foundations for the Study of Social Innovation in the Public Sector.- Open Government and Transparency.- Digital Transformation in the Context of the Open Government Partnership.- What to be Disclosed? Attributes of Online Games for the Market Transparency Policy.- User Perspectives.- Analysing Legal Information Requirements for Public Policy Making.- Technology Mediated Citizenship: What can we learn from library practices.- eHealth in the Hood: Exploring digital participation in a Swedish suburb.- "I'm disabled and married to a foreign singlemother". Public service chatbot's advice on citizens' complex lives.