>> there was a lot of debate among her strategists about exactly how to humanize her, how to make her more accessible to people. >> in fact, there was a lot of debate among her strategists about everything. >> it wasn't just good old fashioned healthy debate. there was some infighting. >> you know, but you know, campaigns under stress have that. it's true. >> the race was tight as they approached the all-important iowa caucuses, so the campaign turned to its secret weapons. >> so i wanted to introduce you to my mom and my daughter. >> an ad called "dorothy" hit the airwaves. >> what i would like people to know about hillary is what a good person she is. >> and chelsea joined her mother and grandmother on the stump and in the diners. >> just laughing a lot with my grandmother and mother because my grandmother was really excited about the egg salad sandwich that she said was like