Harris, 54, officially launched her campaign for the US presidential election in 2020 to take on President Donald Trump on Monday, saying she was "honoured" to announce her bid on a day when Americans celebrated Martin Luther King Jr who sought inspiration from Mahatma Gandhi.
In the 24 hours after the Democratic Party leader from California made the announcement on ABC's "Good Morning America", 38,000 donors gave USD 1.5 million to her campaign, the Fox News reported.
"Thanks to you, we surpassed USD 1.5 million in grassroots contributions in under 24 hours," Harris tweeted.
In fact, within the first 12 hours alone, Harris' campaign registered USD 1 million in funding, and the average donation was around USD 37, the report said mentioning the Wall Street Journal.
Harris also raised more than USD 110,000 from merchandise, which includes a tote bag, a T-shirt featuring her "Kamala Harris for the people" slogan and a hat, according to the Journal.
A vocal critic of President Trump, Harris is the fourth Democrat to join the battle for the party's nomination in the 2020 election.
While it's too early to say on the results of the grilling presidential primary that would conclude with the Democratic National Convention in July 2020, the Indian-American community leaders said Harris - who is of mixed parental heritage from India and the Caribbean - has a fair and clear shot at the White House.