We are familiar with the idea of a formal representative, and perhaps the idea of a formal political representative readily comes to mind. Roughly, this is someone who has been selected by an official process to hold a political office where he or she is tasked with promoting, advocating, and speaking for a constituency. However, we are also familiar with informal representatives: those who speak for a constituency but are not appointed by formal processes. Once again, the idea of an informal political representative is probably familiar: rock stars and other celebrities commonly claim to “speak for” others with respect to distinctively political matters, and they are understood by the public to (informally) represent a constituency. Of course, there are lots of ways in which informal political representation can go wrong. Surprisingly, the topic has not been thoroughly theorized. Until now. In Speaking for Others: The Ethics of Informal Political Representation (Harvard University Press 2024), Wendy Salkin develops an intricate framework for thinking about informal political representation.