Yeah,
first-past-the-post voting sucks. I much prefer some kind of ranked choice voting, but the momentum on that movement has been
vveeeeerrrrryyy ssslllllooooowwwww so far, because nobody's been able to make it sexy. It mainly appeals to political nerds, like me.
The same, to a lesser extent, goes for third parties. I have, of course, heard all of the "lesser evil" arguments before, and it seems to resonate with a lot of people. There are many rebuttals, such as:
1) Unless you live in a swing state, your vote for president doesn't really matter anyway. If you live in a red state, support will go to Republicans; if you live in a blue state, support will go to Democrats. It doesn't matter who you vote for. And if it doesn't matter who you vote for, why not vote your preference?
2) If Democrats think that they are guaranteed your vote, they have no reason to take your concerns seriously. As long as they can keep scaring you about the Republicans, you'll keep voting for them, even when they go into right-wing territory. However, if you can scare them with losing to a "spoiler" candidate, you might be able to pull their platform to the left. I don't have millions or billions of dollars to influence them with. My only bargaining chip is my vote.
3) Voting for the "lesser evil" is what got us into this situation in the third place. If you keep doing what you've always done, you're going to keep getting what you've always got. Jill Stein characterizes this as voting for the "greater good" instead of the "lesser evil".
4) It's undemocratic for me to be scared into voting against my best interests. I know that there's always going to be a two-party system as long as we have first-past-the-post voting (see
Duverger's Law). I just want it to be a different two parties.
#4 is my primary reason, because I stand on principle, unlike the Democratic Party. I think that principles are important.