For the political appeals I found an ad by Elizabeth Warren. the ad was "Kids like me." In the ad she talks about how her family had to struggle just to stay in the "middle class." She talks about how GE pays no tax. I looked it up on factcheck.org and GE does pay taxes.
 When she talks about how college students are in debt I think that she was trying to reach out to those people who are still trying to pay off the students loan. She comes across as a regular person with the same needs and whats as a "middle" class person might feel. she does this by showing old photos of herself and her family.  http://bcove.me/qg140v38