A political party is a group of registered voters organized to support often common views and certain policies. The prime aim of a political party is to contest election and elect official who will carry out the party’s policies by holding power in the government. The Democratic Party and the Republican Party, sometimes referred to as the Major Parties, are the two largest political parties in the US. Both parties are recognized and on the ballot in all 50 states plus Washington, DC. In addition to the two major parties, there are a number of minor parties, often called Third Parties. The largest Third Parties in the US are The Libertarian Party (recognized in 39 states) and The Green Party (recognized in 27 states). There are dozens of smaller third parties, (Ballotpedia)
(From online voters guide- ballotready)
Electoral College: The Electoral College is a process consists of the selection and meeting of the electors, where they vote for President and Vice President, and the counting of the electoral votes by Congress.
Presidential Primaries and Caucuses: Before the general election, most candidates for President go through a series of state primaries and caucuses. Though primaries and caucuses are run differently, they both serve the same purpose—to allow the states to help choose the political parties’ nominees for the general election