the biggest reason america has a two party system is
Two-party system A two-party system is a party system where two major political parties[1] dominate the government. One of the two parties typically holds a majority in the legislature and is usually referred to as the majority or governing party while the other is the minority or opposition party. Around the world, the term has different senses. For example, in the United States, Jamaica, and Malta, the sense of two party system describes an arrangement in which all or nearly all elected officials belong to one of the only two major parties, and third parties rarely win any seats in the legislature. In such arrangements, two-party systems are thought to result from various factors like winner takes all election rules.[2][3][4][5][6][7] In such systems, while chances for third party candidates winning election to major national office are remote, it is possible for groups within the larger parties, or in opposition to one or both of them, to exert influence on the two major parties.[8][9][10][11][12][13] In contrast, in the United Kingdom and Australia and in other parliamentary systems and elsewhere, the term two-party system is sometimes used to indicate an arrangement in which two major parties dominate elections but in which there are viable third parties which do win seats in the legislature, and in which the two major parties exert proportionately greater influence than their percentage of votes would suggest.
List of third party performances in United States elections In the 58 presidential elections since 1788, third party or independent candidates have won at least 5.0% of the vote or garnered electoral votes 12 times (21%); this does not count George Washington, who was elected as an independent in 1788â€“1789 and 1792, but who largely supported Federalist policies and was supported by Federalists. Occasionally, a third party becomes one of the two major parties through a presidential election (the last time it happened was in 1856, when the Republicans supplanted the Whigs, who had withered and endorsed the ticket of the American Party): such an election is called a realigning election, as it causes a realignment in the party system; according to scholars, there have been six party systems so far. Only once one of the two major parties came third in an election, but that did not cause a realignment (in 1912 the Progressive Party surpassed the Republicans, but the party quickly disappeared and the Republicans re-gained their major party status). The last third party candidate to win one or more states was George Wallace of the American Independent Party in 1968, while the most recent third party candidate to win more than 5.0% of the vote was Ross Perot, who ran as an independent and as the standard-bearer of the Reform Party in 1992 and 1996, respectively.