Abstract This chapter applies the theories of voting developed earlier to problems in public law. It begins by studying the right to vote and restrictions thereon. The discussion covers voter information, fraud, campaign finance, and the legal concept of a “political community.” Next, the chapter studies structures of representation, including the size and composition of the legislature, the “one-person, one-vote” principle, gerrymandering, and a concept called the “republican compromise.” The chapter concludes by discussing two forms of government competition, direct democracy and voter mobility. The discussion includes an interpretation of the “single subject rule,” a widespread constitutional provision.