Political behavior generates private benefits by helping people fit in with desired friends. A voter imitates other voters, but at the same time they imitate him. An equilibrium solution requires exogenous variables: the narrow self‐interest of the participants. The reduced form makes one's vote a function of the narrow self‐interest of others as well as one's own. In accord with the model, a person's party identification depends on his ethnic group's current income and its income in 1909 as well as his own inc