Bernie Sanders gives his "Where We Go From Here" Speech at a rally at Town Hall in New York City.
Bernie Sanders gives his "Where We Go From Here" Speech at a rally at Town Hall in New York City.

Democratic presidential hopeful Bernie Sanders' campaign announced Wednesday it raised nearly $6 million during its first day of online fundraising, easily exceeding first-day totals amassed by his rivals.

More than 220,000 donors contributed to Sanders, a Senator from Vermont, in a 24-hour period since he announced his bid Tuesday for the White House, eclipsing his 2015 first-day fundraising total of more than $1.5 million.

Bernie Sanders Joins 2020 Presidential Race

Public disclosures showed Senator Kamala Harris of California was previously the top early Democratic fundraiser, with more than 38,000 donors contributing $1.5 million. Harris announced her candidacy on January 21.

Senator Elizabeth Warren of Massachusetts raised nearly $300,000 online on December 31, the day she announced an exploratory campaign committee.

Sen. Elizabeth Warren, D-Mass., speaks to local re
Sen. Elizabeth Warren, D-Mass., speaks to local residents during an organizing event, Feb. 10, 2019, in Cedar Rapids, Iowa.

Senator Amy Klobuchar raised more than $1 million in 48 hours after launching her campaign on February 10, campaign officials said.

Sanders' show of strength is not surprising. He raised more than $200 million when he opposed Hillary Clinton in the 2016 presidential race.

Bernie Sanders Joins 2020 Presidential Race

In its announcement Wednesday, the Sanders campaign touted a large grassroots donor base that includes individuals who have already "contributed $600,000 in donations that will recur every month."