Vice President Kamala Harris is set to be confirmed as the Democratic presidential nominee through a five-day electronic voting process that began on Thursday, just a few weeks away from the party's national convention.

Just under 4,000 delegates, who are grassroots activists and politicians chosen during the primary process, submitted their signatures to support Harris - who was the only person to cross the 300 signatures qualifying threshold.

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She received the support of 99% of the delegates who signed petitions, according to a statement from the Democratic National Committee (DNC).

"Our delegates have an important responsibility -- and opportunity -- in the days ahead to cast their history-making ballots for Vice President Harris, ensuring that she will be on the ballot in every state this November," said DNC chair Jaime Harrison.

"Our party has met this unprecedented moment with a transparent, democratic and orderly process to unite behind a nominee with a proven record who will lead us in the fight ahead."

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In addition to the pledged delegates, there are around 700 superdelegates who can vote due to their roles as elected officials.

The voting process began at 9:00 am (1300 GMT) and delegates have until 6:00 pm on Monday to cast their votes through an online platform managed by the DNC.

Earlier this week, the Harris for President campaign announced that, since President Joe Biden's endorsement, the vice president has raised $200 million.

The campaign reported that approximately 66% of the total contributions came from first-time donors, reflecting what they described as “unprecedented grassroots support.”

It also revealed that, until Monday this week, more than 170,000 volunteers have signed up to support her campaign through phone banking, canvassing, and other get-out-the-vote efforts.