Chapter 1. The American presidential nomination process consists of a series of elections (primaries) in which states vote at different times. The problem faced by a political party choosing the optimal temporal structure for its primaries is studied in an environment in which a sequential election may generate voter herding. By choosing the temporal structure, the party can induce voter herding which is ex ante beneficial in selecting the best candidate. When candidates have equal loyal support, simultaneous voting is optimal. When one candidate has more loyal support, a sequential election can be optimal since voter herding compensates for the loyal voter imbalance. This novel example of a beneficial information cascade contrasts results ...