Social gambling and home poker games are not legal in New Hampshire. The gambling laws specifically state that “A person is guilty of a misdemeanor if such person knowingly and unlawfully… permits gambling in any place under the person's control”, which eliminates the legality of playing in a home. Only licensed games, such as horse racing, boxing and raffles, are legal gambling activities within the state.

[Reference: http://www.gencourt.state.nh.us/rsa/html/LXII/647/647-2.htm]