The legalization of same-sex marriage in a state is a signal that causes certain groups to change their opinion to support the policy.
Five years ago, Iowa became the third U.S. state to allow same-sex marriages when the state Supreme Court issued a unanimous and very unpopular decision in the case Varnum v. Brien. Since this decision, public attitudes towards same-sex marriage in the state, and the United States in general, have changed dramatically. Rebecca Kreitzer, Allison Hamilton and Caroline Tolbert draw […]