The Community Coalition Action Theory (CCAT) blends practice wisdom with empirical data to explain how community coalitions achieve community change and community capacity outcomes. The current study uses data from an evaluation of 20 "California Healthy Cities" and "Communities" coalitions to test relationships between coalition factors and outcomes as predicted by CCAT in two stages of coalition development. Data are from two rounds of coalition member surveys, interviews with local coalition coordinators, and semiannual progress reports. Consistent with CCAT predictions and prior research, shared decision making and leadership were correlated with participation; staff competence, task focus, and cohesion were correlated with member satisfaction. Coalition size was associated with participation and dollars leveraged. Also, consistent with CCAT, diversity of funding sources was associated with new leadership opportunities and program expansion; dollars leveraged was correlated with new leadership opportunities and new partners. Findings provide preliminary support for many, but not all, of the relationships predicted by CCAT. (Contains 3 tables and 1 figure.)