Rasmus Kleis Nielsen is Assistant Professor of Political Communications at Roskilde University in Denmark and Research Fellow at the Reuters Institute for the Study of Journalism at the University of Oxford. His research deals with political communications, the use of digital technologies by campaigns, and changes in news media organizations around the world. "Ground Wars: personalized communication in political campaigns" (Princeton University Press, 2012) is his most recent book. Previous work includes “The Changing Business of Journalism and its Implications for Democracy (edited with David Levy, published by the Reuters Institute for the Study of Journalism, 2010). He is a frequent speaker at conferences on politics, communications, and journalism and has published in a wide range of academic journals. More at rasmuskleisnielsen.net.