Political theory informs public policy decisions by providing a framework for understanding governance and social behavior. Theories such as liberalism, conservatism, and socialism offer insights into the values and objectives that should guide policy-making. By applying theoretical principles, policymakers can evaluate the implications of various policies and prioritize actions that align with societal objectives. Additionally, political theory can enhance public debates by introducing normative questions about justice, equality, and freedom, thus enriching the overall democratic discourse.