If we're lucky and the news media gets completely destroyed by the Internet (which process has certainly begun) whatever replaces it probably won't be as unified in reinforcing the two-party hegemony. I think that's the biggest factor in people not even considering a vote for even the milquetoast alternatives that we got this last time around. Every time the "other" candidates get a mention, it's to poke fun of them for some geographical error. ("She flew to the wrong city!" "He couldn't find Aleppo on a map; doesn't he know we'll have to bomb that city soon?")