Science, technology, engineering, and mathematics (STEM) teachers need sources of empowerment to effectively guide education policy and continue to participate in advocacy-based activities. This study surveyed 208 STEM teachers on their acts of advocacy to advance STEM education. The question that guided this research was as follows: What are the underlying factors that contribute to STEM teachers' advocacy activities in effecting change to STEM education policies? An exploratory factor analysis was conducted to determine underlying factors contributing to STEM teachers' engagement in advocacy activities via the theoretical lens of empowerment. The findings revealed four factors that empowered their advocacy work: critical confrontations, political awareness, communicative voice, and policymaker influence. The data suggest that as sampled STEM teachers developed a critical consciousness, they were empowered to engage in critical conversations on issues of social justice, such as galvanizing efforts to make STEM education accessible to all students and equitable for diverse learners.