How do checks and balances limit the power of public institutions?

In political science and public administration, the principle of checks and balances limits the power of public institutions by ensuring that no single branch or entity can act unilaterally or dominate the others. By requiring separate branches to share power and cooperate, this system prevents the concentration of authority that can lead to tyranny or arbitrary rule.123

Mechanisms that enforce these limits include:

• Institutional Oversight: In tripartite governments, branches are empowered to prevent actions by others. For example, the executive may use a veto against legislation, while the legislature may override that veto or use impeachment to hold executive and judicial officials accountable.1
• Judicial Review: Courts examine the actions of legislative and executive arms to ensure they remain within constitutional boundaries.1
• Horizontal Accountability: This concept describes how nonmajoritarian institutions operate to monitor one another, ensuring that public officials remain within the law and act with probity and openness.4
• Shared Decision-Making: By requiring the consent of multiple bodies—such as the Senate’s role in approving treaties and appointments—the system forces different interests to be heard and considered, preventing any one group from ignoring the concerns of others.12