The system of checks and balances is integral to state governments, ensuring that different branches exert control over one another to prevent abuse of power. This system allows for the legislative, executive, and judicial branches to maintain oversight and accountability. For example, state legislatures can override executive vetoes, while courts can declare laws unconstitutional. By distributing power, checks and balances promote democracy, protect citizens' rights, and encourage collaborative governance, making it vital for maintaining a balanced political environment.