A lottery is a gambling game or method of raising money in which tokens (usually numbers) are distributed and a drawing is held for prizes. Lotteries have a wide appeal as a means of raising funds because they are relatively inexpensive to organize and easy to play. They also tend to generate large prizes. Typically, a bettor writes his name or other symbol on a ticket that is deposited for shuffling and possible selection in the drawing; the prize money is then awarded by chance. Some modern lotteries are computerized and permit bettors to purchase tickets online or by telephone.

Several states now offer state lotteries, with each offering different games and procedures. Usually, a government entity acts as the organizer and promoter; it begins with a modest number of simple games and gradually expands its offerings. In the process, it is usually subject to constant pressure from donors for more and more revenue and the result is a lottery that does not necessarily advance the public interest.

One important issue is that many critics charge that state lottery advertising is often deceptive, presenting misleading information about the odds of winning (e.g., claiming that a jackpot prize will be paid out in equal annual installments over 20 years, while inflation dramatically erodes its value), and exaggerating the amount of money that can be won. Further, they contend that lotteries are heavily influenced by the wealthiest members of society and that they tend to exclude lower-income communities.