Where can I find more information about the ban on political campaign activity by Section 501(c)(3) organizations? For more detailed information, see IRS Revenue Ruling 2007-41, which describes a number of scenarios to help organizations understand the ban on political campaign activity, view an on-line minicourse on the StayExempt micro site and find other resources on the Charities and Non-Profits page. In addition, subscribe to Exempt Organization’s regular email newsletter, EO Update, which highlights new information posted on the Charities and Non-Profits pages of irs.gov. Subscribe here: EO Newsletter.