 Complete the following phrase:  In a 2008 interview with correspondent Bob Woodruff featured on the program, former United States Senator and 2004 Democratic presidential candidate John Edwards admitted to having had an adulterous affair unbeknownst his wife, Elizabeth, with a campaign staffer later identified as Rielle Hunter who worked on his campaign for the then-forthcoming 2008 presidential election, which he would drop out of. In the 2009-2010 television season, the series narrowly beat Late Show with David Letterman as the highest-rated late-night program in the U.S. in terms of total viewers, assisted by the 