Checks and balances are fundamental elements of constitutional democracy that prevent the unconstrained exercise of power, improve the quality of decision-making and ensure that mechanisms exist for preventing or penalising unethical behaviour. Lisa James, Alan Renwick and Meg Russell argue that they therefore play a vital role in maintaining public confidence in the political system and the government has a particular responsibility to uphold them.

Background

The importance of checks and balances is often cited in debates about the health of democracy, and their erosion is widely considered a sign of democratic backsliding. But what are they, and why are they important?

Checks and balances are the mechanisms which distribute power throughout a political system – preventing any one institution or individual from exercising total control. The words ‘checks’ and ‘balances’ are typically used together, but can be thought of as referring to subtly different (though overlapping) things. Checks are the mechanisms which allow political institutions to limit one another’s power – for example by blocking, delaying or simply criticising decisions. Balances, meanwhile, ensure that a wide variety of views and interests are represented in the democratic process. This includes structures like federalism, or broader features of democratic functioning such as the existence of multiple political parties.

The term ‘checks and balances’ is given more prominence in some countries than others, and is often particularly associated with the United States. But the principle is core to all modern democracies.

Checks and balances operate between and within most political institutions. However, the risks of unconstrained power are often considered particularly high with respect to the executive. This briefing hence focuses on the key institutions which check and balance executive power at UK level:

1. parliament
2. the courts
3. impartial officials, and
4. media and civil society.

Why do checks and balances matter?

Checks and balances play two key roles. First, they limit the power of the majority to act without regard to the views or interests of others. They ensure that the perspectives of those who are in the minority on a given issue are represented – for example, by guaranteeing that opposition voices are heard in the process of law-making. Second, at a more practical level, they ensure that policy is tested and behaviour supervised. This helps to improve the quality of decision-making, and prevent behaviour which might threaten the integrity or reputation of the political system.