Because he's good; because everyone else sucks
Of course, Dennis doesn't have all the huge corporate bucks that Hillary and Obama have. Why isn't that considered a plus?
Sorry. Silly rhetorical question. As Jonathan Schwarz reiterated a few days ago, there is no Santa Claus. Giving us the "choice" between two bought-and-paid-for warmonger corporate politicians is pretty much the raison-d'etre of our bought-and-paid-for warmonger corporate media.