Washington (CNN) Democratic presidential candidate Andrew Yang raised more than $16.5 million in the last three months of 2019, surpassing his third quarter haul by $6.5 million, his campaign announced Thursday.

Yang's fundraising, powered by a devout grassroots supporter base known as the Yang Gang, has turned the once longshot candidate into a fixture on the debate stage who is now polling better than most of his Democratic competitors. In a statement, his campaign said 400,000 donors have now given to his White House bid and that his total number of contributions is now more than one million.

The businessman-turned-politician also had an impressive day on December 31 -- the fourth quarter's final day -- which the campaign said was their "highest single-day haul with more than $1.3 million" raised.

While Yang's new record will allow him to "devote resources toward TV and digital ads, on-the-ground staff, and campaign infrastructure," his latest numbers are significantly lower than those from Vermont Sen. Bernie Sanders, one of the race's leading candidates who raised more than $34.5 million during the final three months of 2019, and Pete Buttigieg, the former mayor of South Bend, Indiana, who brought in $24.7 million.

Other Democratic candidates have yet to release their new numbers. President Donald Trump, meanwhile, raised $46 million in the fourth quarter, his campaign announced Thursday.

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