I am by no means a constitutionalist, but Kirk is right here. Go vote, if you're in the US. There has, arguably, never been a more important election in US history.
If there were ever a time to vote 3rd party, it's now. You may not agree with Chase Oliver's views on everything, but he is at least a reasonable sounding human being who's willing to compromise.
It's hardly a party no one's heard of and yea you would need a majority (duh?). But by all means, don't vote with your principles; treat it like a strategy game and keep perpetuating a broken 2 party duopoly. That's been a great way to affect change over the last century.