This chapter begins an examination of political information networks during the course of a presidential election campaign. Our immediate goal is to address a series of descriptive issues regarding the nature of social interaction among citizens – particularly social interaction that carries political content. With whom do citizens discuss the election campaign? How does political discussion vary across different types of relationships? To what extent does political discussion take place within networks of socially and politically homogeneous individuals? A sample of South Bend area residents was interviewed three times during the election campaign, and they were asked to name the people with whom they discussed the election, as well as to supply information regarding these relationships. A sample of these discussants was interviewed subsequently, thereby expanding our ability to examine the political content of social interaction.