The Tesla CEO is one of the newest Republican megadonors. He's given almost $75 million in three months to his Trump-supporting PAC.

Timothy Mellon

Billionaire businessman Timothy Mellon is one of Trump's biggest backers, having given the pro-Trump Super PAC Make America Great Again $125 million this election cycle, per OpenSecrets.

Miriam Adelson

The widow of casino magnate Sheldon Adelson and a staunch Israel, Miriam Adelson gave $95 million to Preserve America, her pro-Trump PAC, during the third quarter of the year, per an FEC filing released Tuesday.

The Uihleins, founders of the shipping company ULine, poured nearly $49 million into their conservative Restoration PAC in the last quarter of the year, according to FEC filing released Tuesday.

Mike Bloomberg

Billionaire Mike Bloomberg has given $19 million this cycle to Future Forward, a super PAC that had supported Biden's re-election effort and is now supporting Harris' campaign, per Politico.

Reid Hoffman & Michelle Yee

Hoffman, the co-founder of LinkedIn, and his wife Michelle Yee are major donors in Democratic circles.