Rational Abstention and the Congressional Vote Choice

Research on voting, particularly on legislative behavior, tends to focus on the choices of those casting ballots. Yet, intuitively, abstentions and vote choice should be jointly determined. As such, the relevance of participation depends upon both the extent to which it can be explained by the costs and the benefits of voting and on the nature of the interactions between participation and preferences. To this end, we provide a framework for explaining roll call behavior that simultaneously considers legislators' decisions about whether and how to vote. Application to roll call voting in the 104th Congress finds that abstention and voting choices are integrated; our approach generates sensible and substantively important results which yield important insights into legislative behavior and public policy.