The Impact of Coalition Governance on Policy Stability in Multi-Party Democracies: A Comparative Analysis of Southeast Asian States

Project Abstract

This study examines how coalition governance shapes policy stability in multi-party democracies, with a comparative focus on Southeast Asian states that have increasingly relied on coalition arrangements to govern. It situates policy stability as the consistency and predictability of policy trajectories across electoral cycles, while accounting for the institutional design of governing coalitions, party dynamics, and external pressures. Employing a mixed-methods approach, the research consolidates a cross-national dataset of coalition cabinets from 1990 to 2024, coding variables related to coalition type (minimal winning, grand, and technocratic coalitions), cabinet durability, policy continuity, and conflict incidence across key policy domains such as fiscal policy, social welfare, and regulatory reform. In-depth case studies of Singapore, Malaysia, Thailand, Indonesia, and the Philippines are conducted to illuminate how formal rules, coalition bargaining mechanisms, and the distribution of ministerial portfolios influence policy stability. The study hypothesizes that greater cabinet fragmentation and more complex coalition agreements tend to reduce policy stability due to bargaining frictions, veto players, and policy reversals; however, it also contends that institutional features such as strong constitutional constraints, credible commitment mechanisms, and adaptive governance arrangements can mitigate destabilizing effects and even enhance stability in certain contexts. The analysis deploys event history analysis to measure the duration of policy regimes and structural equation modeling to assess the mediating roles of veto points, inter-party trust, and policy consensus-building processes. It also employs process-tracing in the selected cases to capture sequencing effects of coalition formation, cabinet reshuffles, and alliance realignments on policy outcomes. The findings reveal a nuanced relationship in states with cohesive party systems and robust executive-legislative alignment, coalitions tend to deliver relatively stable policy outputs despite frequent cabinet changes; conversely, in multiparty environments characterized by deep inter-party cleavages and weak institutional checks, coalitions exhibit greater policy volatility, marked by abrupt reversals and inconsistent reform agendas. The study identifies three mechanisms that stabilize policy institutionalized coalition agreements with binding dispute resolution, de facto policy continuity through technocratic or expert-driven ministries, and policy feedback loops that integrate stakeholder preferences into iterative reform cycles. It also highlights the role of external variables such as regional security concerns and global economic shocks in shaping coalition bargaining and policy resilience. Policy implications emphasize the need for designing durable coalition agreements, strengthening veto-override processes where appropriate, and fostering inter-party trust through transparent negotiation protocols and regular policy dialogue. The research contributes to debates on democratic governance by clarifying how coalition governance can both impede and promote policy stability, offering a comparative framework applicable to other regional multiparty democracies facing similar coalition dynamics.

Project Overview

What This Project Is About

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The project looks at how governments formed from multiple parties (coalition governance) affect the stability of laws and policies over time. It compares Southeast Asian democracies to see whether coalition partnerships lead to more or less consistent policy decisions.

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The Problem It Addresses

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In multi-party systems, coalitions can shift with elections, making it hard to maintain steady policies. This study fills gaps in understanding how coalition structures (who is in the government) influence policy continuity, especially in Southeast Asia where democracies vary in strength.

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Objectives of the Project

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1. Identify patterns of coalition formation in selected Southeast Asian states.
2. Measure policy stability over time under different coalition arrangements.
3. Assess how coalition duration and partner diversity relate to policy changes.
4. Compare findings across countries to identify common factors.

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What You Will Do Step by Step

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1) Review existing literature on coalition governance and policy stability.

2) Select case study countries and collect data on governments and major policy changes.

3) Create indicators for coalition characteristics and policy stability.

4) Analyze relationships using simple statistical methods and comparative analysis.

5) Interpret results in light of regional political contexts.

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Expected Outcome

Anticipated findings include clear links between coalition durability, partner diversity, and policy consistency, with practical insights for voters and policymakers on how coalition design affects governance stability.