Senate 1965-1967: Who Held Control?. He followed this with The 1968 Federal Redistribution (1969). His first major work was Australian General Elections (1972) in which he pioneered the concept of the two-party majority and the two-party swing, and introduced the "pendulum", a table of federal electorates in order of two-party majority, now commonly known as the Mackerras Pendulum. He followed this with a series of books before each federal election, such as Elections 1975, Elections 1980, The Mackerras 1990 Federal Election Guide and The Malcolm Mackerras 1993 Federal Election Guide. He is commonly described as a psephologist which means "one who studies elections". However, he insists that his political science interests are much broader than that. Indeed, one of the reasons for his determination on the November–December 2000 North American visit was to study all the legal manoeuvres in connection with the only "cliffhanger" presidential election of the 20th century. He visited the US again in September 2004 to attend the Annual Meeting of the American Political Science Association in Chicago. For the years 2002, 2003 and 2004 he has been specialising in Australian state elections. He visited South Australia in February 2002, Victoria in November–December 2002 and New South Wales in March 2003 for elections in those states, which involved writing newspaper articles plus broadcasting. He did the same for Queensland where a state election was held on 7 February 2004. He did the same for Australia's federal election on 9 October 2004. Publications His two most recent books are Australian Political Facts: Second Edition (Macmillan, 1997) which he wrote with Ian McAllister and Carolyn Brown Boldiston and, more recently, Constitutional Politics: The Republic Referendum and the Future (University of Queensland Press, 2002), which he edited with John Warhurst of the Australian National University. The two men took opposite sides in the debate over the 1999 Australian republic referendum but have now joined together to record the event. Election commentary Mackerras has been a regular commentator on Australian elections in print, on radio and television on most federal and state elections. He has become well known for his predictions of electoral outcomes. He claims a "win" ratio of two in three and adds, "at least I'm not boring. The election analyst who makes predictions is far more interesting than one who doesn't. And if I collect egg on my face, then so be it." An example of an incorrect