Sorry to be the language police (but word choice is important when labeling politicians): I don't think any Sander's supporters would vote for a left-libertarian mode; I think you meant left-liberalist or something like that. Libertarianism would be opposed to the role of government in Sander's democratic-socialist platforms.

It's interesting you'd put Trump on the far right. I find Trump to be one of the more moderate republican candidates when compared to Cruz, Carson, and Paul, for example. Trump wants universal healthcare and a progressive tax where the lowest bracket remains 0%. I think most liberals have this caricatured image of him that lead them to these exaggerated conclusions, and while I don't like the guy I really think you've misrepresented his position on the political spectrum.