What are delegates, and what is their role in the nomination of a presidential candidate?
They are people chosen to represent their state at the National Party convention. At this convention, they vote on who becomes their party's presidential nominee. This vote reflects the outcome of their state's primary elections.
> Each state has a number of delegates based on the population of the state
> The Democratic party has 3979 delegates, the Republican Party has 2472
> You must receive 1991 (Dems) or 1276 (Reps) to win the nomination