In May 2020, the Department for the Execution of Judgments of the European Court of Human Rights published a Thematic Factsheet entitled “Constitutional matters [3].” The factsheet summarizes ways that rulings by the ECtHR have affected countries’ implementation of their domestic law, the structure of their court systems, human rights’ policies, and processes available to citizens and non-citizens to pursue the protection of those rights. It covers both “Reforms in Constitutional Matters” and “Changes in Constitutional Courts’ Case-Law”; under those sub-headings it covers categories like “Protection of rights in detention,” “Protection of private life,” “Access to and efficient functioning of justice,” and “Electoral rights.” Factsheets [4] related to “Effective investigations” and “Environmental issues” are forthcoming.