Robert McKenzie (psephologist)

Robert Trelford McKenzie (11 September 1917 – 12 October 1981) was a Canadian professor of politics and sociology, and a psephologist (one who does statistical analysis of elections). He is perhaps most well known in Britain as one of the main presenters of the BBC's General Election programmes.

Born in Auckland, New Zealand, the son of William Meldrum McKenzie and Frances (née) Chapman, he was educated at King Edward High School and the University of British Columbia from which he graduated with a BA. He was a lecturer at the same university from 1937 to 1942. In 1943, he joined the Canadian Army and a year later, with the rank of captain, was sent to London where he remained for the rest of his working life. Leaving the services three years later, McKenzie enrolled at the London School of Economics to study for a doctorate. In 1949, he was given a sociology lectureship, and was promoted to professor in 1964.

He was widely known in the UK for his televised reports on general election results as they were announced on the BBC. He is popularly associated with the swingometer device used in such broadcasts. The swingometer was first introduced in 1955 by Peter Milne, and was later refined by McKenzie and David Butler and used nationally in the 1959 General election for the BBC. At first Butler used the meter, but in 1964 McKenzie enthusiastically took over. He appeared on all BBC election nights from 1955 to 1979, and was later replaced by Peter Snow in 1983 due to McKenzie's death in 1981. Additionally, he introduced and moderated the discussions in each episode of Milton Friedman's 1980 television series Free to Choose.

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