PA Progress is a center-left election reform advocacy organization. The group is a project of the Sixteen Thirty Fund, a 501(c)(4) funding and fiscal sponsorship organization managed by the Washington, D.C.-based consultancy Arabella Advisors.¹

1. “Sixteen Thirty Fund.” OpenCorporates. Accessed January 11, 2019. https://opencorporates.com/companies/us_dc/EXTUID_2696217.