In 2007, before the Affordable Care Act expansion of health care coverage, the Schwarzenegger Administration proposed an expansion of access to care in California. The California HealthCare Foundation engaged the Blue Sky Consulting Group to estimate the likely fiscal impact of this proposal on California counties. By constructing a model of the likely response of consumers to the incentives embodied in the bill and identifying and analyzing the characteristics of the affected populations, we were able to accurately estimate the fiscal effects of the proposal. We presented the results of our work in a public meeting held at the state capitol and attended by key legislative and administration staff involved in the health care expansion effort.