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.