This paper proposes a field procedure for collecting data at stationary mass rallies. Noting the research gap in adequate data about ongoing gatherings, we present a set of techniques summarized under the name zone-sector strategies. We emphasize area sampling, dividing the crowd into zones and sectors, and collecting data during stationary phases of assemblages. We also employ two-member interview teams, in an effort to collect reliable information about attitudinal and nonvisible characteristics of participants during the demonstration itself. Methods of testing reliability and validity of information are presented. Data from four political rallies exemplify the techniques and basically support the validity of the zone-sector approach. We conclude by stating possible uses and advantages of the methods
Collecting Data on Crowds and Rallies: A New Method of Stationary Sampling
Seidler, J., Meyer, K., & Gillivray, LM. (1976). Collecting Data on Crowds and Rallies: A New Method of Stationary Sampling. Social Forces, 55(2), 507-519.