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.
Federalism in the United States
The most forceful defense of the new Constitution was "The Federalist Papers", a compilation of 85 anonymous essays published in New York City to convince the people of the state to vote for ratification. These articles, written by Alexander Hamilton and James Madison, with some contributed by John Jay, examined the benefits of the new, proposed Constitution, and analyzed the political theory and function behind the various articles of the Constitution. "The Federalist Papers" remain one of the most important sets of documents in American history and political science.