CLUSTER FUCKERY
In order to get on the ballot, a candidate for president of the United States must meet a variety of complex, state-specific filing requirements and deadlines. These regulations, known as ballot access laws, determine whether a candidate or party will appear on an election ballot. These laws are set at the state level. A presidential candidate must prepare to meet ballot access requirements well in advance of primaries, caucuses, and the general election.
There are three basic methods by which an individual may become a candidate for president of the United States.
An individual can seek the nomination of a political party. Presidential nominees are selected by delegates at national nominating conventions. Individual states conduct caucuses or primary elections to determine which delegates will be sent to the national convention.[1]
An individual can run as an independent. Independent presidential candidates typically must petition each state to have their names printed on the general election ballot.[1]
An individual can run as a write-in candidate.[1]
The information presented here applies only to presidential candidates. For additional information about ballot access requirements for state and congressional candidates, see this article.
https://ballotpedia.org/Ballot_access_for_presidential_candidates
https://people.howstuffworks.com/what-happens-presidential-candidate-dies.htm