The Federalist Papers are a collection of 85 essays written between October 1787 and August 1788 advocating ratification of the United States Constitution. They were published serially in New York newspapers under the shared pseudonym “Publius” and were later compiled into book form. The essays were written by Alexander Hamilton, James Madison, and John Jay, though the specific authorship of several individual essays remains disputed among historians.

The collection is often cited as a source for understanding the original intent of the Constitution's framers, and is frequently referenced in American constitutional law, judicial opinions, and political theory. The essays addressed objections raised by Anti-Federalists and argued for a stronger, more centralized federal government than existed under the Articles of Confederation, while attempting to assuage fears that such a government would become tyrannical.

Historians and legal scholars broadly agree on the circumstances of the Federalist Papers' composition, publication, and immediate political purpose: securing ratification of the Constitution, particularly in the closely contested state of New York. Disagreement persists, however, over how much weight the essays should carry as evidence of the Constitution's original meaning, given that they were persuasive political writing rather than a neutral explanation of the document, and that they represent the views of only three of the Constitution's many framers.

Authorship of a small number of essays (notably essays 18-20, and several others) is disputed between Hamilton and Madison, based on conflicting claims made by the authors themselves later in life and subsequent stylometric analysis. Most attributions are well-established and uncontested.

The essays are also studied independently of their ratification-era purpose as works of political theory, particularly Madison's essays on factions (Federalist No. 10) and the separation of powers (Federalist No. 51), and Hamilton's essays on judicial review (Federalist No. 78) and executive power.

• Originalist Viewpoint - Holds that the Federalist Papers are an authoritative guide to the original public meaning or original intent of the Constitution and should carry significant weight in constitutional interpretation.
• Limited Evidentiary Value Viewpoint - Holds that the Federalist Papers, as advocacy documents authored by a subset of framers for a specific political audience, are unreliable or insufficient as evidence of the broader founding generation's understanding of the Constitution.
• Living Constitutionalist Viewpoint - Holds that constitutional meaning evolves with society and that the Federalist Papers, while historically informative, should not be treated as binding on present-day interpretation.
• Anti-Federalist Rebuttal Viewpoint - Holds that the arguments in the Federalist Papers were effectively countered or remain unresolved relative to objections raised in contemporaneous Anti-Federalist writings, such as the Brutus and Cato essays, particularly regarding federal overreach and the absence of a Bill of Rights - Debate.

• The disputed authorship of certain essays between Hamilton and Madison remains an unresolved historical question with competing claims from the authors themselves and later scholars. See Disputed Authorship Controversy.
• The use of the Federalist Papers in U.S. Supreme Court opinions to support originalist or textualist rulings has been a recurring point of legal and political contention. See Supreme Court Citation Controversy.

• History of the Federalist Papers
• Debate: Originalism and the Federalist Papers
• Constitution of the United States
• Anti-Federalists
• Bill of Rights - Debate
• Founding Fathers

1. Hamilton, Alexander, James Madison, and John Jay. *The Federalist Papers*. Edited by Clinton Rossiter. New York: New American Library, 1961.
2. Adair, Douglass. “The Authorship of the Disputed Federalist Papers.” *William and Mary Quarterly* 1, no. 2 (1944): 97-122.
3. Furtwangler, Albert. *The Authority of Publius: A Reading of the Federalist Papers*. Ithaca: Cornell University Press, 1984.
4. Wills, Garry. *Explaining America: The Federalist*. Garden City, NY: Doubleday, 1981.
5. Epstein, David F. *The Political Theory of the Federalist*. Chicago: University of Chicago Press, 1984.