A competition based on chance, in which numbered tickets are sold for the opportunity to win a prize. Lotteries are generally regulated at the state level, with winners selected by drawing lots. The word lottery is derived from the ancient practice of casting lots to determine decisions and fates, or as a divination tool. Modern state lotteries usually begin with a small number of fairly simple games and, as demand increases, progressively expand the range of games offered.

Lottery advocates often argue that it provides a way for people to acquire large sums of money without having to work, and that this can help alleviate poverty and other social problems. Critics point out that lottery revenues are not as dependable as other public funds and that lottery winners often become addicted to gambling and, in some cases, find themselves worse off after winning the jackpot.

In the United States, the establishment of state lotteries occurred during a time when state governments were expanding their array of services and were facing increasing budget pressures. The popular anti-tax movements of the time led many lawmakers to seek out alternative revenue sources, and lotteries seemed like a reasonable solution. The success of lotteries was due, in part, to the fact that they were perceived to benefit a specific “public good” (education) and could be presented as an attractive alternative to raising taxes or cutting other public programs. Lotteries also became a convenient source of political contributions from convenience store owners (the main lottery vendors) and to lottery suppliers, who tend to donate heavily to state political campaigns.