Psephologist

Psephology /sᵻˈfɒlədʒi/ (from Greek psephos ψῆφος, 'pebble', as the Greeks used pebbles as ballots) is a branch of political science which deals with the study and scientific analysis of elections.

Psephology uses historical precinct voting data, public opinion polls, campaign finance information and similar statistical data. The term was coined in 1952 in the United Kingdom by W. F. R. Hardie (1902–1990) after he was asked by his friend R. B. McCallum for a word to describe the study of elections.

Psephology is a division of political science that deals with the examination as well as the statistical analysis of elections and polls. People who practice psephology are called psephologists.

A few of the major tools that are used by a psephologist are historical precinct voting data, campaign finance information, and other related data. Public opinion polls also play an important role in psephology. Psephology also has various applications specifically in analysing the results of election returns for current indicators, as opposed to predictive purposes. For instance, the Gallagher Index measures the disproportionality of an election.

Degrees in psephology are not offered (instead, a psephologist might have a degree in political science and/or statistics). Knowledge of demographics, statistics, and politics are required of psephologists.

Notable psephologists include Antony Green;Malcolm Mackerras (who devised the Mackerras pendulum); Michael Barone, who has co-authored The Almanac of American Politics biennially since 1972; David Andrews, who since 1973 has led the Canadian network CTV's analysis and "calling" of dozens of federal and elections and referenda; Nate Silver, whose website FiveThirtyEight tracks U.S. voting trends; Canada's Éric Grenier at threehundredeight.com; David Butler and Robert McKenzie, who co-developed the swingometer; Charlie Cook, publisher of The Cook Political Report; Indian academic Yogendra Yadav; and Curtis Gans, author of Voter Turnout in the United States, 1788-2009.

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