Identifying the Critical Members of the House of Representatives

This article combines the historical record of presidential-congressional relations with previous scholarly findings to develop a model that identifies the members of Congress whose support is critical to the president's ability to build enacting coalitions. It then analyzes the relationship between President Obama and the House of Representatives during the 113th Congress as a case study that demonstrates the model's utility. Conventional wisdom and political pundits suggest that presidents working in divided government will have impossible difficulty working with Congress, but history suggests otherwise. The president's ability to successfully build enacting coalitions during divided government requires him to perform two rather disparate tasks. First, the president must minimize the amount of presidential party members who cross party lines to vote against the president's position. Second, the president must entice at least some opposition party members to cross party lines and support the president's position. Using data from 1981 to 2015, I find that representatives’ behavior on presidential support votes are related to constituency-level presidential strength, electoral vulnerability, ideological moderation, and ideological extremity. I use these results to identify the critical members of the 113th Congress. When a majority of these critical members supported President Obama's positions his legislative efforts were successful. When a majority of these members opposed the president's positions, the House Republican majority defeated the president.