I think we started off on the same page but I may have lost you.
Movies and Music are very powerful tools for invoking an emotional response and can be used very effectively when selling an idea. Politics is an idea, and that is what is being sold. Ideas are intangibles with little practical value and certainly no immediate gratification. Hope and Change are left to the buyer to be defined.
The best Politicians will not allow themselves to be defined. At least not by their opponents.
Give this a view.
Start With Why - Simon Sinek TED talk
https://www.youtube.com/watch?v=sioZd3AxmnE
Thanks, i’ll check it out.