Republican megadonor Ken Griffin gives $10 million to boost Byron Donalds’ bid for Florida governor

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It’s the biggest contribution to date received by Donalds, who is the favorite to become the Republican nominee.

Rep. Donalds And Speaker Johnson Dedicate Frederick Douglass Press Gallery At The US Capitol

Rep. Byron Donalds, R-Fla., has raised roughly $90 million for his gubernatorial campaign.Michael M. Santiago / Getty Images file

July 24, 2026, 5:00 AM EDT / Updated July 24, 2026, 11:31 AM EDT

By Matt Dixon

TALLAHASSEE, Fla. — Billionaire GOP donor Ken Griffin is contributing $10 million to Florida Republican gubernatorial candidate Byron Donalds, who is the overwhelming favorite to get his party’s nomination, two people familiar with the donation told NBC News.

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