A super PAC affiliated with billionaire businessman Charles Koch and his late brother, David Koch, has spent roughly $160 million this election cycle boosting Republicans, records show.

The sprawling independent expenditures by Americans for Prosperity Action were largely made to support GOP House and Senate candidates through canvassing, digital advertisements, mailers, and other campaign-related services, according to Federal Election Commission filings. AFP Action’s spending has more than tripled since 2020, when it dropped $47.7 million, whereas the Koch-linked group spent $70 million in 2022.

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