Voting and Abstaining in the U.S. Senate: Mr. Downs Goes to Washington

Rothenberg and Sanders (2000a) find little support for a Downsian theory of voter participation in the (104th) U.S. House of Representatives. Vote abstentions are common in legislative bodies. In the 2nd session of the 110th United States Senate, for example, the abstention rate was approximately 0.057. The present paper uses logistic regression models with fixed effects as well as random effects in an alternative legislative setting to determine whether vote participation in the 110th Senate conforms to “Downsian rationality.” Throughout the analysis, we find substantial evidence that legislators in the 2nd session of the 110th Senate made vote participation decisions in a manner consistent with Downsian rationality.