In reality, states have no position in the nomination of presidential candidates other than holding legal elections. The parties determine the candidates.
The national convention system for nominating presidential candidates was developed by the Democratic Party in the early 19th century. This system was established to provide a more formal and inclusive process for selecting candidates, allowing party members from different states to come together and choose their nominee. The convention system has since been adopted by other political parties in the United States.
"Both major political parties in the United States select their presidential candidates through a process of primary elections. However, voters do not directly select presidential nominees in these primaries. Instead, they choose delegates from their respective states who will attend a national party convention to nominate a presidential candidate for their party." from thisnation.com
The electoral college has absolutely nothing to do with nominating process for US presidential and vice presidential candidates. Each political party controls its own process of nominations limited only by the level of cooperation from each of the states.
It was in the United States. It took several years for this practice to arrive in the US. I am not sure that it was a development in the sense that it was a theoretical advancement from the point of view of government theory.
A United States presidential nominating convention is a political convention held every four years in the United States by most of the political parties who will be fielding nominees in the upcoming U.S. presidential election.
The nomination or designation of candidates for public office by direct popular vote rather than through the action of a convention or body of elected nominating representatives or delegates. The term is applied both to the nomination of candidates without any nominating convention, and, loosely, to the nomination effected, as in the case of candidates for president or senator of the United States, by the election of nominating representatives pledged or instructed to vote for certain candidates dssignated by popular vote.
Presidential candidates qualify for Federal election funds by registering for them. The candidates must raise individual contribution funds of $5000 in 20 of the States to receive matching funds.
In the United States, a vice presidential vacancy is filled by the President nominating a new Vice President, who must then be confirmed by a majority vote in both the House of Representatives and the Senate.
Delegates from all the states meet and elect a candidate for president and then for vice president, Nowadays so many of the delegates are committed to a particular candidate by primary elections that one candidate can have the nomination "sewed up" before the convention occurs and lately it has been the custom to let the presidential nominee pick his running mate. This did not used to be the case.
They choose the best looking canidate, and take them out to lunch to see how they act.
In the United States, a national party convention is the means by which the candidates for president and vice president are determined.
presidential primary elections and caucuses is one of the first steps in the process of electing the President of the United States of America. The primary elections are run by state and local governments, while caucuses are private events run by the political parties