Beto O'Rourke Beto O'RourkeJimmy Carter says his son smoked pot with Willie Nelson on White House roof O'Rourke endorses Kennedy for Senate: 'A champion for the values we're most proud of' 2020 Democrats do convention Zoom call MORE announced on Wednesday that he raised $9.4 million in less than three weeks during the first quarter of 2019, a sum that reinforces the former Texas congressman's reputation as one of the top fundraisers in the 2020 Democratic field.

Unlike other 2020 hopefuls, who have been campaigning for weeks and months, O'Rourke raked in the seven-figure haul in only 18 days, amounting to an average of about $520,000 per day, his campaign said.

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O'Rourke's first-quarter haul came from 218,000 contributions, with an average donation size of $43, according to his campaign. Ninety-nine percent of the contributions to O’Rourke campaign were made online.

“Not only is this a sign of our grassroots strength during the first two weeks of our campaign but it is a sign of what's possible when you put your full trust in the people of this country,” O’Rourke said in a statement.

O’Rourke has already established himself as one of the Democratic Party’s most prolific fundraisers. In the 24 hours after announcing his White House bid last month, his campaign said he raised a staggering $6.1 million — the largest single-day haul of any 2020 hopeful so far.

The fundraising announcement came a day after another established fundraiser, Sen. Bernie Sanders Bernie SandersButtigieg stands in as Pence for Harris's debate practice Bernie Sanders warns of 'nightmare scenario' if Trump refuses election results Harris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda MORE (I-Vt.), announced that his campaign had raised more than $18 million for his presidential bid in the first quarter of the year.

Another 2020 hopeful, Sen. Kamala Harris Kamala HarrisButtigieg stands in as Pence for Harris's debate practice First presidential debate to cover coronavirus, Supreme Court Harris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda MORE (D-Calif.), revealed this week that she had raised $12 million in the first three months of 2019.

Meanwhile, Pete Buttigieg Pete ButtigiegButtigieg stands in as Pence for Harris's debate practice Hillicon Valley: FBI, DHS warn that foreign hackers will likely spread disinformation around election results | Social media platforms put muscle into National Voter Registration Day | Trump to meet with Republican state officials on tech liability shield Facebook takes down Chinese network targeting Philippines, Southeast Asia and the US MORE, the mayor of South Bend, Ind., said he raised $7 million in the first quarter.

Andrew Yang Andrew YangDoctor who allegedly assaulted Evelyn Yang arrested on federal charges The Hill's Campaign Report: Biden weighs in on police shootings | Who's moderating the debates | Trump trails in post-convention polls Buttigieg launches his own podcast MORE, a former tech executive who is running a long-shot bid for the White House, said Tuesday that he raised $1.7 million in the first quarter.

The fundraising totals and the number of people who contributed to the campaigns are significant because they are seen as signs of grass-roots support and enthusiasm.

Candidates have until April 15 to report their fundraising totals for the first quarter of 2019 to the Federal Election Commission, although they can choose to release the numbers on their own.

By putting out their fundraising totals early, candidates are hoping to project political strength and long-term viability in what is expected to be a long and expensive primary contest. With the Iowa caucuses still 10 months away, candidates will need to amass significant amounts of cash to keep their campaigns afloat.

O’Rourke earned a reputation as a strong fundraiser last year, when he raked in more than $8 million for his closely watched though ultimately unsuccessful challenge to Sen. Ted Cruz Rafael (Ted) Edward CruzTrump argues full Supreme Court needed to settle potential election disputes Press: Notorious RBG vs Notorious GOP The Hill's Morning Report - Sponsored by Facebook - Washington on edge amid SCOTUS vacancy MORE (R-Texas). That massive haul was among the factors that fueled perceptions of O’Rourke as a possible presidential contender.