Oh, where to begin...
How about with MTV's roundup of actual darkhorse presidential candidates, the slate of which is summed up well by the article's headline:
'Star Trek' Extra, Fascist, Horseshoer, Dark Priest: The Other Presidential Candidates
Among the contenders:
From the "Vampires, Witches, and Pagans Party," we have Jonathon Sharkey, Satanist, "sanguinary vampyre", professional wrestler and perennial political candidate.
Then there's woodcarver, oil painter and pie baker Gene Amondson, running on a single-plank platform: eliminate alcohol. See his website for a photo of him dressed as the Grim Reaper outside an Anheuser Busch brewery.
Jackson Kirk Grimes — 56, a single pagan with a GED who once portrayed Hitler on "Star Trek," this director of the United Fascist Union (which promotes the economic theories and political ideologies of Benito Mussolini and Saddam Hussein) and two-time presidential candidate promises to abolish paper money and create a global government if elected.