Michael Gallagher

Michael Gallagher (born 1951) is a political scientist.

He is Professor of Comparative Politics and head of the Department of Political Science at the Trinity College Dublin.

Trained as a computer scientist, Gallagher combines his understanding of statistical analysis with his interests in politics.

He holds a B.A. from Lancaster, two M.Sc.

degrees, one from Essex and one from Strathclyde.

He completed his Ph.D. at the University of Strathclyde.

Gallagher created the Gallagher index, a least squares index of proportional representation that measures an electoral system’s disproportionality between votes received and seats allotted in a legislature.

His research interests include Irish politics, comparative political institutions, and political parties.

He has also written around 70 journal articles and book chapters (his most cited independent work is "Proportionality, Disproportionality and Electoral Systems" in Electoral Studies [1991]), and serves on the editorial boards of various journals in the discipline, including Electoral Studies, European Journal of Political Research, Representation, Party Politics and Irish Political Studies.

Gallagher was president of the Political Studies Association of Ireland, from 1994 to 1996.

Gallagher is the author, co-author or editor of eighteen books, including The Politics of Electoral Systems (2005, co-edited with Paul Mitchell), Politics in the Republic of Ireland (4th ed., 2005, co-edited with John Coakley), and Representative Government in Modern Europe (4th ed., 2006, co-edited with Michael Laver and Peter Mair), which are standard textbooks in their fields.