Final answer:
The party candidate to run for the presidency is chosen at the national convention after a series of primaries and caucuses.
Step-by-step explanation:
The party candidate to run for the presidency is chosen at the national convention.
After a series of primaries and caucuses, the final presidential nominee is selected at the party's national convention. At the convention, delegates from each state vote to determine the party's candidate for the presidency.
For example, in the United States, the Republican and Democratic parties hold their national conventions to choose their respective candidates. These conventions serve as a platform for party members to come together and decide on the candidate who will represent their party in the general election.