United States presidential primary
There is no provision for the role of political parties in the United States Constitution, since the Founding Fathers did not originally intend for American politics to be partisan. In Federalist Papers No. 9 and No. 10, Alexander Hamilton and James Madison, respectively, wrote specifically about the dangers of domestic political factions. Thus in the first two presidential elections, the Electoral College handled the nominations and elections in 1789 and 1792 that selected George Washington. The beginnings of the American two-party system then emerged from Washington's immediate circle of advisors. Hamilton and Madison, who wrote the aforementioned Federalist Papers against political factions, ended up being the core leaders in this partisanship: Hamilton became the leader of Federalist Party while Madison co-helmed the Democratic-Republican Party with Thomas Jefferson.
Federalist No. 2
Federalist No. 2 is an essay written by John Jay, the second of "The Federalist Papers", a series of 85 essays arguing for the ratification of the United States Constitution. These essays, written by Jay, Alexander Hamilton, and James Madison, were published under the pseudonym "Publius". Federalist No. 2, titled "Concerning Dangers From Foreign Force and Influence", was published on October 31, 1787, as the first of five essays written by Jay where he addresses the advantages of a unified government over separate sovereignties. He discusses how an undivided country enforces laws with more efficiency, resolves conflicts, and gives better protection from foreign influences (i.e. such as military force).