David McCullagh PhD is an Irish journalist and author. He is a presenter of the current affairs television programme Prime Time, and Political Correspondent with RTÉ News and Current Affairs.McCullagh attended Newpark Comprehensive School and studied politics in University College Dublin. He holds a PhD in the subject.He began his journalistic career working for the Evening Press. He is Political Correspondent with Raidió Teilifís Éireann, along with David Davin-Power.