The Democratic National Convention is a series of presidential nominating conventions held every four years since 1832 by the United States Democratic Party. They have been administered by the Democratic National Committee since the 1852 national convention. The primary goal of the Democratic National Convention is to nominate and confirm a candidate for President and Vice President, adopt a comprehensive party platform and unify the party.

Delegates from all fifty U.S. states and from American dependencies and territories such as Puerto Rico and the Virgin Islands attend the convention and cast their votes to choose the Party's presidential candidate. Like the Republican National Convention, the Democratic National Convention marks the formal end of the primary election period and the start of the general election season.

The party's presidential nominee is chosen in a series of individual state caucuses and primary elections. Superdelegates, delegates whose votes are not bound to the outcome of a state's caucus or primary, may also influence the nomination. Due to the scheduling of caucuses and primary elections early in the election year, the party's presidential nominee is usually known months before the Democratic National Convention. Historically, however, the party's choice of the presidential nominee was usually not known until the last evening of the convention. The choice was an often contentious debate that riled the passions of party leaders. Delegates were forced to vote for a nominee repeatedly until someone could capture a minimum number of delegates needed.