Which document outlines the structure and function of Illinois government?

The Illinois Constitution is the foundational legal document that outlines the structure and function of the government in Illinois. It establishes the framework for the state's executive, legislative, and judicial branches, detailing how these branches operate and interact with one another. The Constitution also includes provisions for local government, civil rights, and the amendment process, thereby defining the fundamental legal principles that govern the state.

The Illinois Bill of Rights, while an important component of the Constitution, primarily focuses on protecting individual rights and freedoms. It does not provide a comprehensive outline of the government structure itself.

The Illinois Compiled Statutes are a collection of laws that have been enacted in the state, organized for ease of use. However, these statutes do not serve as the foundational document of government structure; they are subject to change and interpretation based on the Constitution.

The Illinois Administrative Code contains the rules and regulations created by state agencies to implement laws. While it is essential for understanding regulatory processes, it does not address the overarching structure and functions of the government as defined in the Constitution.

Thus, the Illinois Constitution is the primary document that details how the state government is organized and operates, solidifying its importance for both governance and legal reference in Illinois.