I used to think in those terms until I became thoroughly disgusted with the US notion of individual/celebrity based politics. There is no other politics other than those based in mainstream political institutions - utopian idealism notwithstanding. I would love to see this country having a parliamentary system and a socialist or a communist party like many European nations do - but we do not. Democrats is all we have, so any serious progressive political action should take place within that institutional framework. Any "third party" idea is nothing but a freak show and sheer lunacy.
PS. A few years ago I changed my party affiliation to Independent (the Greens were not around at that time in MD) out of disgust with the Clinton administration. This was a mistake, as I cannot vote in the primaries. I am going to register as a Democrat again.
Wojtek