Research Notes: PACs, 527s, and 501(c)(4) Issue Groups
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US Code TITLE 26, Subtitle A, CHAPTER 1, Subchapter F, PART VI, Sec. 527.
Political Action Committee Study by the Leadership Institute.
Election Year Activities for 501(c)(4) Social Welfare Organizations by Alliance for Justice.
Under the Radar: Stealth PACs by Common Cause.
Shadowy 527 Groups Continue Soft Money Grab As 2002 Election Approaches by Public Citizen.