Robert Yoon is Director of Political Research at CNN and the longest-serving member of CNN's Political Unit. Since joining the Washington D.C. bureau in 1999, he has covered five presidential campaign cycles and is one of the network's principal authorities on elections, debates, the presidential nomination process, voting procedures, and money in politics. During his tenure, he has written and researched questions for 30 presidential debates, working with eight different moderators and more than 20 panelists. His 200-page election briefing books have become an indispensable resource to CNN anchors, correspondents, and staff. He completed his 21st briefing book in October 2016. His contributions to CNN's election coverage over the years have earned him two Emmy Awards, five total Emmy nominations, a Peabody Award, and a National Headliner Award. He received an additional National Headliner Award for his work on CNN's investigation of the 9/11 terror plot. He was named by Mediaite as one of the most influential people in the news media in 2016.