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Participatory budgeting with cumulative votes
Piotr Skowron1, Arkadii Slinko2, Stanisław Szufa3
1University of Warsaw, Warsaw, Poland.
Theory and Decision
|April 23, 2026
Summary
Participatory budgeting methods using cumulative votes are proposed. The Minimal Transfers method shows strong proportionality, making it promising for practical use in funding projects within budget constraints.
Area of Science:
- Economics
- Political Science
- Computer Science
Background:
- Participatory budgeting involves decision-makers selecting projects within a budget.
- Voter preferences are crucial for project selection.
- Current aggregation methods aim for budget adherence and optimality.
Purpose of the Study:
- To propose novel aggregation methods for participatory budgeting.
- To evaluate these methods using axiomatic properties and simulations.
- To identify methods with desirable characteristics for practical application.
Main Methods:
- Development of aggregation methods based on cumulative votes.
- Voters allocate a budget share (coin) across projects.
- Comparison via axiomatic analysis and computer simulations.
Main Results:
- Several cumulative vote-based aggregation methods were proposed.
- The Minimal Transfers method exhibited strong proportionality.
- This method demonstrated desirable behavior for practical use.
Conclusions:
- Cumulative vote methods offer a new approach to participatory budgeting.
- Minimal Transfers is a promising method due to its proportionality.
- This research contributes to optimizing resource allocation in group decision-making.
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