The Third Party System was a period in the history of political parties in the United States from the 1850s until the 1890s, which featured profound developments...

two-party system describes an arrangement in which all or nearly all elected officials belong to either of the two major parties, and third parties rarely...

Third party, or minor party, is a term used in the United States' two-party system for political parties other than the Republican and Democratic parties...

A party system is a concept in comparative political science concerning the system of government by political parties in a democratic country. The idea...

the Fifth Party System and allowed Democrats to dominate the White House for 40-some years arose from the realignment of two similar third party factions...

The Seventh Party System is a proposed era of American politics that began with the 2016 United States presidential election. Its periodization, alongside...

currents of the Jacksonian Era, until succeeded by the Third Party System. This party system materialized from two realignments in 1828. The first realignment...

The Fourth Party System was the political party system in the United States from about 1896 to 1932 that was dominated by the Republican Party, except the...

or forming a coalition is sometimes called a "third-party system".[citation needed] A two-party system requires voters to align themselves in large blocks...

Constitution, which predates the party system. The two-party system is based on laws, party rules, and custom. Several third parties also operate in the U.S....