What is the role of a national party convention?

The role of a national party convention primarily centers around the nomination of presidential candidates. During these conventions, delegates from across the country gather to formally select their party's nominee for president. This process includes speeches, votes, and often a celebration of party unity, culminating in the announcement of the chosen candidate.

While the convention may also address other matters, such as establishing party rules and fostering party cohesion, its most significant and high-profile function is the nomination of the presidential candidate who will represent the party in the upcoming election. This moment is critical for setting the tone for the campaign and galvanizing party members and supporters.

Other options like conducting local elections or determining voter registration do not align with the primary purpose of a national party convention. Local elections and voter registration are handled at different levels of government and through separate processes. Thus, the emphasis on nominating presidential candidates clearly highlights the central role of the national party convention in the electoral process.