Nixon grew up on a farming property outside Orbost, Victoria. He was educated at Wesley College, Melbourne. At the age of 18 he sustained a severe injury to his left hip while playing Australian rules football, requiring him to spend eight months in hospital. He passed the time by reading and playing chess. Following his recovery Nixon took up farming, the fourth generation of his family to farm in Gippsland. He had a property named Macclesfield, where he grew seed beans and maize. He later switched to mixed farming, growing lucerne and keeping dairy cattle. In 1952 he married Jacqueline "Sally" Dahlsen, with whom he had three children.
Politics
Nixon was elected to parliament at the 1961 federal election, following the resignation of George Bowden, the incumbent Country Party MP in Gippsland. He had initially not been a candidate for preselection, agreeing to stand only when the presumed nominee suffered a fatal heart attack three days before nominations closed. Nixon quickly became a senior member of the Country Party and first entered the ministry as Minister for the Interior in October 1967 before moving to the Shipping and Transport portfolio in 1971 under John Gorton. He retained this portfolio under William McMahon. He is mentioned in the song Gurindji Blues, saying "Buy your land back, Gurindji" referring to his assessment of the Wattie Creek land rights strike. In opposition from 1972 to 1975, Nixon was a prominent figure in persuading his National Party colleagues to help pass Australian Labor Party legislation opposed by the Nationals' coalition partner, the Liberal Party. This helped prove to voters the National Party's independence from the Liberal Party and in cases such as when the Nationals supported Labor's policy on educational grants to public schools, helped to show the National Party's connection with core voter issues. Nixon was also a longtime critic of what he saw as bias by the Australian Broadcasting Corporation against the National Party. Following the Coalition victory in 1975, Nixon served as Minister for Transport until 1979 and then Minister for Primary Industry, both in Malcolm Fraser's government. On the floor of parliament, Nixon was known for trading insults with opposition members and particularly his verbal stoushes with Fred Daly.