Consider two types of residents, who prefer two different values of a policy. A current majority in some city, seeking to increase the probability that it will set policy in the following period, may adopt current policies that are particularly unattractive to the minority, leading some members...

A current majority in some city, seeking to increase the probability that it will set policy in the following period, may initially adopt extremist policies that are particularly unattractive to the minority, leading some members of the minority to emigrate. This article develops a model to...