This case study describes how the Nigeria country team of MamaYe!, an organization focused on maternal and newborn health, facilitated the creation of a state-level evidence-based accountability mechanism in Jigawa state: the Jigawa state Maternal, Newborn and Child Health Accountability Forum (JiMAF).This brought together many stakeholders, including CSO networks, the media, the private sector, and the government, in turn creating greater transparency and accountability regarding maternal, newborn, and child health (MNCH). This serves as an excellent example for CSOs in GFF Countries as a way to mobilize and form stronger accountability mechanisms at a more local level.