Comprises 1 Excel file (.xlsx) entitled 'Freer and fairer? How the ECHR has helped reform elections to the European Parliament' This file containing 6 spreadsheets prefaced by an 'Explanatory Notes' sheet that provides more detailed guidance. Part 1: The first 2 spreadsheets 1. HUDOC EXEC Aggregated data, excluding decisions issued by the Committee of Ministers to Russia since 2022 2. HUDOC EXEC Aggregated data, including decisions issued by the Committee of Ministers to Russia since 2022 These provide supplementary data and analysis to provide an aggregate impression of the rate of execution of judgments relating to different ECHR rights as presented in footnote 7 of H. Hardman (2026) 'Freer and fairer? How the ECHR has helped reform elections to the European Parliament' Human Rights Law Review 26(3) Part 2: Table 1. Right to vote Table 2. Parliamentary immunity; Right to stand as a candidate; election broadcasting Table 3. More generous political rights at EP elections as a catalyst for reform of national legislative elections Calculation of the rate at which electoral complaints have been remedied (from Tables 1-3) These 4 spreadsheets clarify how the data presented in Tables 1-3 (Hardman, 2026) were quantified and the method of calculating the rate at which electoral complaints have been remedied as presented in Section 6 'Conclusions' (Hardman, 2026).