Every four years since 1996, William G. Mayer edits a book of essays on the presidential nomination process. The book consists of 8 chapters, all on various aspects of that process, including the invisible primary, the Iowa caucuses, media coverage, television advertising, campaign finance, voting behavior, and the historical origins of the process. The book has two major objectives: to present a broad overview of the presidential nomination process through a detailed examination of some of its most significant components; and to showcase some of the most interesting work now being done on the politics of presidential selection.