Thesis advisor: Seth Jacobs / The vice presidencies of Lyndon B. Johnson and Humphrey H. Humphrey were momentous stages in both of their political careers. After leaving the position of Senate majority leader to become John F. Kennedy’s vice president, Johnson underwent a swift, total decrease in political efficacy. Those dark years impacted how he tackled the presidency, particularly in the handling of his own vice president. As Johnson’s vice president, Humphrey also watched the political power he had accrued as Senate majority whip evaporate. In an attempt to impress Johnson, Humphrey overcompensated and became a disciple for the Johnson administration’s unpopular war in Vietnam, destroying any chance Humphrey had to further his political career past the vice presidency. I argue that while their terms as vice presidents—Johnson’s was less than three years long and Humphrey’s was four years—were short periods of time in the grand scheme of their long careers, they were highly consequential for both men and severely damaging for Humphrey. / Thesis (BA) — Boston College, 2017. / Submitted to: Boston College. College of Arts and Sciences. / Discipline: Departmental Honors. / Discipline: History.