This study examines the possible effect of the president's vote totals in states on Presidents Carter's and Reagan's support among senators. Using senators' Congressional Quarterly (CQ) presidential support scores as the dependent variable, this paper hypothesizes that Carter and Reagan's support is significantly and positively related to their electoral success in that Senator's state for the years 1977 through 1988. Several control variables are included to help explain support. There is qualified corroboration for the hypothesis that senator's presidential support scores are significantly and positively related to the president's electoral success for specific administrations and for specific-party senators, although not for the original hypothesis that aggregated the period 1977 to 1988.

This research incorporates a decision-making theory which defines the linkage between the public, the media, the president and the Congress. Specifically, I argue that the public holds widely shared domestic and international goals and responds to a number of external cues provided by the president and the media in its evaluation of presidential policies. Although most studies examine overall presidential popularity, there are important differences in the public's evaluations of the president's handling of foreign and domestic policies. Additionally, I am concerned with how the Congress responds to these specific policy evaluations, the president's public activities, and the electoral policy goals of its members when determining whether or not to support the president. Finally, I link together the theoretical assumptions, to examine the influence of varying levels of support among the Congress and the public, and the president's own personal power goals on the type, quantity, and the quality of activities the president will choose. Ultimately, the primary focus of this dissertation is on the sources and consequences of presidential support and the influence of such support on presidential decision-making.