President Trump acknowledges the crowd at a rally in Orlando on Tuesday. She declared that it was proof that "enthusiasm across the country for this president is unmatched and unlike anything we've ever seen".
It's a demonstration of the power incumbency, while underscoring Democratic worries that they are not doing enough to prepare for the matchup with Trump.
The campaign had set a $7 million goal for Trump's kickoff rally day in order to top Democrat primary challengers record fundraising earlier in the year.
The $24.8 million dwarfed the $6.3 million former veep Joe Biden took in during the 24 hours after he announced his White House run.
Vermont Sen. Bernie Sanders outraised his Democratic competition in the first quarter with $18.2 million.
Trump beat all three combined, including the front-runner Biden, whom he bested by almost fourfold. The Republican National Committee had an additional $34.7 million during the same period.
Will Steakin reported on Twitter that the $24 million is a combined number, taking into account money raised by both the Trump campaign - around $14 million - and the Trump Victory Fund, which collects money using Trump's name but splits the haul with the Republican National Committee. "Instead, I spend my time meeting voters and thanking grassroots donors who chip in what they can".
Biden, though, has faced criticism among Democratic rivals for his embrace of high-rolling donors and top-dollar fundraisers.
Biden took in $6.3 million, the largest first-day total for any of the 2020 Democratic presidential candidates.