Sen. Bernie Sanders' presidential campaign estimates he raised $5.9 million from 225,000 individuals donors in the first day following his official announcement on Tuesday morning.
The big picture: Sen. Kamala Harris, the biggest fundraiser in the race to date, raised $1.5 million from 38,000 online donors in the 24 hours after she announced her presidential bid last month. The individual donors, who on average donated $26 to Sanders' campaign, reflect the established power of his fundraising machine as he kicks off his second White House campaign.
Go deeper: Bernie Sanders: Everything you need to know about the 2020 candidate