Some things I need to say which will probably be fairly unpopular:
(1) Pauline Hanson is an excellent example of why I think multiparty democracy is a terrible idea. Increasing the political power of people at the fringes might help you get your particular favorite idea represented – but it also lets other people do that. Generally, it moves political power away from the center and towards the edges. And so you end up with people like this having the effective deciding vote in legislatures, able to block any bill if they don't get their way.
(2) In related news, Jill Stein is now talking about how wonderful Julian Assange is. If you haven't been following what Assange and his cronies have been up to lately, he's been (a) openly waging a campaign against Clinton, saying he's doing this specifically to harm her and he doesn't care what else happens, (b) doing massive data dumps without bothering to redact sensitive personal information about people who are in no way implicated in wrongdoing (e.g., people's SSN's and home addresses), and (c) going off on thoroughly anti-Semitic rants in public. In case you haven't noticed it, Julian Assange is grade-A scum who happens to have been involved in some decent things in the past – but, AFAICT, anything good he's done has been by chance, not design.
Stein's self-affiliation with him only serves to lower her even further in my eyes. (Her policy statements did a great deal to do so before this, ranging from her love affair with anti-vaxxers to her lengthy screed against the rights of sex workers)
(3) For those who think that third parties serve an important role in the process, I have to say: I completely and utterly disagree.
Third parties would play an important role if the purpose of elections were for people to express their political opinions, and for the country to come to some kind of conclusion as to how its government should operate at a basic level. But that's not what elections do. That's the purpose of the public square, of public discussion and debate. Elections have a very specific and concrete purpose: to choose who takes various elective offices. That's all they do.
A vote for a third party is simply a fancy way to abstain; it doesn't actually increase the chances that the third party will get funding in the future, or that their ideas will be more listened to, because these parties are the fringe of the fringe: they are so interested in the "purity of their ideals" that they won't even enter into the process of actual dealmaking, coalition-building, and so on. Their ideas will never have an effect, because they have given up on talking to the main bulk of the country and are instead spending their time either preaching to the choir or trying to convert the handful of people who are so far on the edge of their own parties that they're about to abstain anyway.
And to be brutally honest: abstention from important elections on matters of principle is irresponsible.
Elections do come down to small numbers of votes. Bush v. Gore came down to roughly 600 votes' difference. Local elections, even statewide elections, can come down to even less. And when you not only abstain, but encourage others to do so, you stand the risk of actually influencing the election – but rarely in the way you want. Because if you encourage people who are leaning mostly your way to cast a protest vote, you're telling people who would vote for a candidate that mostly agrees with you to stay home. Whether you're on the left or the right, what that does is cast half a vote for the other side.
Do not tell me that both of the candidates are the same. To say that at this point goes beyond the level of "deliberately obtuse." You know they aren't.
Do not tell me that neither of the candidates is speaking about the things you care about. There may be the one thing you care about more than anything else, but whoever is President, and whoever controls Congress, is going to be making decisions about a lot of things, including things you care about a great deal. You do not get to choose from all the people in the world, or from all the positions in the world, but you do get to choose between two options, and they aren't the same. They will not appoint the same people to the courts, they will not start the same wars, they will not do the same things to the economy.
(4) If you are seriously so isolated that you think you would do equally well, or badly, under either of them, then think about what would happen to the rest of the people in the country. They wouldn't.
(5) If you seriously don't care and just want to watch the world burn, then I stand corrected: please, go vote for a third party. Or stay home. Or emigrate. Those of us who have to live here don't welcome you.