Temporary Lecturer in Politics, University of Keele (1972-1973)
Lecturer in Political Theory & Government, University College of Swansea (1973-1978)
Lecturer, then Senior Lecturer, then Reader in Political Science, ANU (1978-2013)
Visiting Fellow, School of History, ANU (2014-2016)
Member of the Emeritus Faculty, ANU (2014 - present)
American Council of Learned Societies Visiting Research Scholar in American Government (1972)
Visiting Fellow at the Roosevelt Center for American Policy Studies (1982)
Visiting Professor of Government at Georgetown University (1984)
Visiting Research Fellow, at The American University Center for Congressional and Presidential Studies (1993).
Research Interests: American Government, The American Presidency, Comparative Executive Government.