A United States presidential nominating convention is a
How is a candidate nominated at a nominating convention?
Today, in 48 states, individuals participate in primaries or caucuses to elect delegates who support their presidential candidate of choice. At national party conventions, the presidential contender with the most state delegate votes wins the party nomination.
Who nominates a presidential candidate?
A candidate for president of the United States who has been selected by the delegates of a political party at the party's national convention (also called a presidential nominating convention) to be that party's official candidate for the presidency.