David Day has been a junior research fellow at Clare College in Cambridge, a visiting professor at the University of Tokyo and University College Dublin, and a research fellow at La Trobe University, the Australian National University, Churchill College, and the University of Aberdeen. Among his many books, he has written prize-winning biographies of John Curtin, Ben Chifley, and Andrew Fisher; and is currently completing a biography of Paul Keating. His first book was Menzies and Churchill at War.