 He began as an advance man on President Dwight D. Eisenhower's reelection campaign in 1956, again worked as an advance man on Nixon's 1960 presidential campaign, and managed Nixon's 1962 run for governor of California.When Nixon was elected President in 1968, he selected Haldeman as his chief of staff.Haldeman is credited with implementing more significant changes to White House staffing systems and Executive Branch governance and operations than any chief of staff before him or since, and it is the "Haldeman system" that presidential administrations continue to operate on today.