The 25 billionaires and millionaires who have already spent roughly $850 million ahead of the midterms

Ahead of November's midterm elections, billionaires and millionaires have already donated roughly $850 million, according to a Business Insider review of federal campaign data. Major donors include financier George Soros and his family, who have given more than $103 million, as well as Elon Musk, Jeff Yass, and Miriam Adelson. The spending highlights the significant financial influence of wealthy individuals in US politics.

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