(CNN) - Republican Sen. Rob Portman gets so into character playing Barack Obama during debate prep that his performance four years ago sparring with then-GOP presidential candidate John McCain made his wife, Cindy, run out of the room crying.
"Part of your responsibility in these debates is to be tougher so the candidate you are helping is ready for the worst of it - so you have to be mean. You need to get under their skin. Sometimes the candidate you are working with doesn't appreciate it, and even more often, their family doesn't appreciate it," Portman told CNN in an exclusive interview.FULL STORY