The candidates’ last official financial reports before the election have been filed. And with just days until we know who our next president is, it’s time to take a look at the funds fueling the spending frenzy in the frantic final moments, and what it could tell us about who may hold sway over the winner.

“Full Measure” dug in to identify the biggest donors behind each candidate, examining data published by the nonprofit OpenSecrets, which tracks donations to the candidates and outside groups supporting them.

“We are looking at more than $14 billion at this point,” said Anna Massoglia, OpenSecrets’ editorial and investigations manager. “We’re projecting this to be a new nominal record.”

Massoglia says the biggest standout late in the money game is the flamboyant X owner and now Trump campaign surrogate Elon Musk, who suddenly dumped more than $100 million into the race.

“Elon Musk has really been a game-changer for this election cycle,” she said. “The amount that Musk has given puts him among the top donors of the election cycle, out of nowhere. Looking at Musk’s history of political contributions, he has given very little over the years, only small sums in the most recent election cycle. This really has the potential to have a change in the election because of the pure sum of money that is going into it.”

Edging out Musk among top individual donors in campaign 2024 is another Trump supporter and also a relative newcomer: investor Timothy Mellon, an heir to the Mellon banking fortune.

“Mellon is one of the newer donors who has emerged this cycle in a very big way, similar to Musk,” Massoglia said. “He does not have a long history of giving and making large political contributions.”

So Mellon weighs in at $172 million.

Then businesswoman and doctor Miriam Adelson, widow of the casino magnate. Musk ranks as the fourth largest donor of 2024, giving more than $118 million.

All of those are Trump supporters.

Harris’s top individual donor in campaign 2024 is Michael Bloomberg of the Bloomberg financial and media empire and former mayor of New York. He’s given over $42 million. Another top Harris backer is LinkedIn cofounder Reid Garrett Hoffman.

And lastly, a lot of money comes to both Harris and Trump from people who don’t work for anyone. They’re retirees, with Trump coming out on top: $129 million to $102 million.

Trump and Harris also get similar amounts from real estate interests.

Other top industries supporting Harris, but not so much Trump, are internet, TV and music, pharmaceuticals and health products, hospitals and nursing homes, and nonprofits. Big for Trump, but not Harris, are tobacco, pro-Israel, oil and gas.

Of course, the big question is, how much does money matter in getting the candidate elected?

“Traditionally, money has equated to a win,” Massoglia said. “Incumbents tend to win more. They tend to get more money. But that is something that’s shifted in recent years.”

Trump is a huge part of that shift, she said, with small and grassroots donors becoming a bigger part of the equation.

“That’s not to say that mega-donors are going anywhere, but it’s not necessarily who has more money that wins,” she said. “It’s whoever resonates with the American people, whoever has their profile out there.”

“Full Measure with Sharyl Attkisson” airs at 10 a.m. Sunday, WJLA (Channel 7) and WBFF (Channel 45).