Federalist No. 20 is an essay by James Madison, the twentieth of The Federalist Papers. It was first published by The New York Packet on December 11, 1787, under the pseudonym Publius, the name under which all The Federalist papers were published. No. 20 addresses the failures of the Articles of Confederation to satisfactorily govern the United States; it is the last of six essays on this topic. It is titled "The Same Subject Continued: The Insufficiency of the Present Confederation to Preserve the Union".

Federalist No. 20

James Madison, author of Federalist No. 20
Author	James Madison
Original title	The Same Subject Continued: The Insufficiency of the Present Confederation to Preserve the Union
Country	United States
Language	English
Series	The Federalist
Publisher	New York Packet
Publication date	December 11, 1787
Media type	Newspaper
Preceded by	Federalist No. 19
Followed by	Federalist No. 21