This chapter introduces the typology of committee types: high policy, public goods, and distributive. It develops the theory of party personnel strategy, consisting of two models political parties may use: the expertise model and the electoral–constituency model. The chapter derives testable premises for the expertise model, which states that parties assign legislators according to individual attributes (e.g., occupation, gender, and local electoral experience) that signal a background relevant to the type of committee on which they serve. The chapter argues that parties of the left and right will tend to differ in which committee types they emphasize, even in the same electoral system, according to their issue ownership. It summarizes the thirteen parties on their tendencies to have legislators with each of the key individual attributes.