Little research has been conducted examining advocacy efforts in the school library field despite the fact that program advocate is a prominent role for school librarians. One element of advocacy is the engagement in political initiatives that may affect school library programs. This case study investigates the effectiveness of one advocacy effort in response to a call for support of a national petition in support of school libraries. Data were collected, and factors underlying this advocacy campaign were analyzed. This report is a case study analysis of a time-constrained advocacy initiative, including the number of participants, demographic factors in relationship to participation, and the interaction of participants on an e-mail discussion list. With the emergent focus on lobbying for the reauthorization of ESEA (Elementary and Secondary Education Act), this study has import for the design and development of successful advocacy efforts now and in the future.