This article offers a fresh perspective into the Eisenhower administration's attempts to predict and influence roll-call outcomes in Congress during the transition from Republican to Democratic control following the midterm elections of 1954. Analysis of archival data uncovered at the Eisenhower Presidential Library in Abilene, Kansas, provides insight into a different facet of Eisenhower's “hidden-hand presidency” and early efforts to systematize congressional liaison. Using headcount data assembled by the Legislative Liaison Unit, this research assesses the accuracy of forecasts of presidential legislative support in the House of Representatives. A multinomial logit model is developed to account for the basis of successful and unsuccessful White House estimates of members' positions. On the subset of votes the White House found difficult to predict, the empirical model highlights that the least accurate forecasts of individual members' positions are best explained by constituency factors, partisan politicking, and disunity in the Republican House Conference.