Federalist No. 51 is an essay by James Madison

James Madison

James Madison, Jr. was an American statesman and political theorist. He was the fourth President of the United States and is hailed as the “Father of the Constitution” for being the primary author of the United States Constitution and at first an opponent of, and then a key author of the United...

, the fifty-first of the Federalist Papers

Federalist Papers

The Federalist Papers are a series of 85 articles or essays promoting the ratification of the United States Constitution. Seventy-seven of the essays were published serially in The Independent Journal and The New York Packet between October 1787 and August 1788...

. It was published on Friday February 8, 1788 under the pseudonym

Pseudonym

A pseudonym is a name that a person assumes for a particular purpose and that differs from his or her original orthonym...

 Publius, the name under which all the Federalist Papers were published. One of the most famous of the Federalist Papers, No. 51 addresses means by which appropriate checks and balances can be created in government and also advocates a separation of powers within the national government.