Vice President Harris is the only candidate who has qualified for the virtual roll call vote to officially select the Democratic presidential nominee.

Electronic voting for the nearly 4,000 Democratic delegates will begin Thursday at 9 a.m. and end Monday at 6 p.m. Harris needs 1,976 votes to secure the nomination and is expected to far surpass that number.

The Democratic National Committee said 3,923 delegates petitioned to put Harris on the ballot for the nomination. No other candidate met the threshold of securing 300 delegate signatures.

Harris is also expected to announce a running mate soon, and when she does the party will declare them the official ticket that will appear on ballots.

Parties traditionally nominate their presidential ticket at a convention, but Democrats chose to hold an earlier vote, citing concerns over ballot access deadlines in some states and an overly litigious Republican Party that could challenge them if they were missed. The Democratic National Convention will be held in Chicago from Aug. 19 to 22.

Election experts have said there’s no evidence to suggest states wouldn’t have worked with the party to ensure their candidates appeared on the ballots.