The California tobacco control program known as Proposition 99 was est
ablished in 1989 using a portion of a twenty-five-cent increase in the
cigarette tax. With an initial availability of more than $150 million
, tobacco control was the state's single most important public health
activity. Health and medical care programs also were supported by the
tax. Despite sustained public support, the tobacco control component w
as weakened by political actions of the tobacco industry and also by t
he competing efforts of organized medicine and the lack of support fro
m the executive and legislative branches of government. Nevertheless,
Proposition 99 succeeded in reducing exposure to environmental tobacco
smoke, cigarette consumption, and smoking prevalence among adults in
California.