From the Center for Freethought Equality
Know What You Are Allowed To Do: The Alliance for Justice’s Bolder Advocacy initiative has comprehensive guidance on what nonprofit organizations can and cannot do with regard to electoral and lobbying activities. Their Guide to Election-Related Activities for 501c3 Organizations outlines permissible actions such as publishing legislative scorecards, creating candidate questionnaires and voter guides, and sponsoring candidate forums. See link below:
https://afj.org/wp-content/uploads/2018/06/Rules_of_the_Game_paywall.pdf