Answer:
An intra-party election is a primary election that aims to select which candidates will be nominated for the actual election within each political party. In American politics, primary elections are important, especially in the context of presidential elections.
Primary elections are held as ballots in individual states, where voters decide how many delegates at the party convention should vote for each of the party's candidates. The primary election generally begins with the small state of New Hampshire and continues in the other states until June, when the last elections are held.
After the last primary election is over, Democrats and Republicans will hold their national conventions. Delegations from all states participate here, where they officially elect their presidential candidate. Each state is represented here with several delegates who vote based on the outcome of their respective state's primary elections.