Governments world-wide increasingly rely on gambling revenues, increasing the importance of understanding who gambles and why. Previous literature used Tobit and Heckman models to statistically analyse participation in gambling. These models make strong assumptions about the nature of gambling participation. We examine the double hurdle model as an alternative to other statistical approaches to modelling gambling participation and spending for lotteries in the province of Alberta, Canada. Our results for lotteries, based on data from a 2002 survey of gambling prevalence in Alberta, clearly prefer the double hurdle model, which yields different results than the commonly used Tobit model. This has important implications for governments who rely on revenues from lottery to fund many different programs in their jurisdictions.