Read for this piece: the two Data+Soul Research evaluation reports for Boston's Office of Participatory Budgeting (Ideas in Action: Evaluation of the Pilot Year 2024-2025, Final Report, May 2025; Ideas in Action: Evaluation and Review of the FY26 Cycle 2025-2026, Final Report, June 2026); the two rulebooks by the Office of Participatory Budgeting and its External Oversight Board (Rulebook 2024-2025, adopted April 2024 with equity guidelines added May 2024; Rulebook Fiscal Year 2027, adopted May 7, 2026) and the FY27 Rulebook Executive Summary (English, June 2026); the Data+Soul evaluation decks and phase reports (Mid-cycle Report, October 2024; Final Report Presentation, March 2025; Cycle 2 Evaluation Plan, May 2025; Idea Collection Report, September 2025; Proposal Development Reports parts 1 and 2, November 2025 and January 2026; Voting Report, March 2026; Full-Cycle Presentation, May 2026; FY27 Idea Collection demographic snapshot, September 2026); the External Oversight Board Annual Review for FY25 (June 2025); the ASG media strategy deck (May 2025); and the External Oversight Board's meeting minutes numbers 1 to 38 (December 4, 2023 to September 17, 2026) with the Office's presentations to the Board from Meeting 22 (September 2024) to Meeting 38 (September 2026).