A Test of Ideological Bias in House Subcommittees, 1979-2000

Committees play a pivotal role in the legislative process. Since the mid-1970s, subcommittees have been important in the lawmaking process as well. Given this enhanced performance, the membership of subcommittees can be a key element in the direction that the legislative process takes. In this article, we develop and test a set of expectations regarding the ideological makeup of subcommittees. Resting firmly on the shoulders of Cox and McCubbins (1993), we assert that those subcommittees with particularized interests will possess memberships which are ideologically distinguishable from their parent committees, while those that affect a wider range of interests will have contingents ideologically indistinguishable from their parent committees. Employing a Monte Carlo simulation technique on ideological composition data of members of subcommittees of the House Appropriations and Ways and Means Committees from the 96th to 106th Congresses, we expect to find that the occurrence of subcommittee outliers are generally consistent (with some notable exceptions) in their direction over time. Additionally, we test the hypothesis that there were no significant changes in the mix of subcommittee outliers from the 103rd to the 104th Congresses and beyond. We find that the change in partisan control of the House resulted in few shifts in outliers.