Sen. (D-Calif.) raised close to $12 million from 279,000 donors in the second quarter, well below the amount brought in by former Vice President and Sen. (I-Vt.).
Nearly 150,000 of Harris’s contributors were new donors, according to her campaign.
The average contribution in the second quarter was $39. Harris brought in $7 million through her digital program, with an average online donation of $24, her campaign said.
The new quarterly figures bring Harris’s total fundraising to $23 million.
Harris’s fundraising trails that of Biden, Sanders and South Bend, Ind., Mayor (D).
Buttigieg brought in $24.8 million during the second quarter, followed by Biden who raised $21.5 million. Sanders raked in $18 million during that time period.
Biden and Buttigieg launched their campaigns in April.
Harris was thrust into the spotlight last week after she confronted Biden on his civil rights record at the first Democratic primary debate.
She has since seen a jump in the polls, while Biden appears to be slipping.
A Reuters/Ipsos poll released Wednesday found that Biden’s support had fallen to 22 percent from 30 percent, while Harris overtook Sen. (D-Mass.) for third place.