Rajeeva Laxman Karandikar (born 1956) is an Indian mathematician, statistician and psephologist. Jayant is nephew of Yogendra Yadav, famous politician and psephologist. Michael Steed is a British psephologist, political scientist, broadcaster, activist and Liberal Democrat politician. Antony John Green (born 2 March 1960) is an Australian psephologist and commentator. Samuel "Sam" Sheng-Hung Wang (born 1967) is an American professor, neuroscientist, psephologist and author. He frequently appears on Indian television as a psephologist and political commentator. Knowledge of demographics, statistics, and politics are prerequisites for becoming a psephologist. The following pendulum is known as the Mackerras Pendulum, invented by psephologist Malcolm Mackerras. He is commonly described as a psephologist which means "one who studies elections". G. Gopakumar is an Indian leading political scientist and psephologist. This has been described by psephologist Kevin Bonham as 'getting Ginniderraed' or the 'Ginniderra effect'.