Americans for Prosperity Action

Americans for Prosperity Action (AFP Action) is the super PAC Arm of Americans for Prosperity, the Koch network's flagship advocacy organisation, itself a product of the donor network Charles Koch assembled over several decades. It is a 501(c)(4)-adjacent structure that can accept unlimited corporate and individual contributions and spend them on independent expenditures, provided it does not coordinate with any campaign it supports. AFP Action has been one of the largest Republican-aligned outside-spending vehicles in each federal election cycle since its formation, deploying broadcast and digital advertising in competitive Senate and House races.

On 2 June 2026 it filed approximately $6.4 million in Senate independent expenditures across five states in a single day: $1.77M for Mike Rogers in Michigan, $1.75M split between supporting Jon Husted and opposing Sherrod Brown in Ohio, $798K for Ashley Hinson in Iowa, $500K for Kurt Alme in Montana, and $375K opposing Chris Pappas in New Hampshire. Republican-aligned Senate IEs outpaced Democratic-aligned ones by roughly 2.3 to 1 in the 29 May to 6 June window.

The Iowa and Montana placements carry particular significance: both seats were rated Lean or Likely Republican at the time of the spend, suggesting AFP Action's own internal modelling had already identified exposure the published forecasting services had not yet reflected. Early outside money in seats a network privately deems vulnerable is a leading indicator that public ratings will follow. The $6.4M single-day filing placed AFP Action among the top independent-expenditure filers in the 2026 Senate cycle at the 150-day mark.