But it's a black and white matter. Something you're wishing it weren't. If you vote for Clinton or Trump, you're making a simple choice - support one or the other. If you have the ability to vote, and choose to either vote for someone that cannot win or choose not to vote at all, then depending on your local demographics, you are still - through that choice - supporting either Trump or Clinton. That you're pretending otherwise means you really need to re-evaluate your own understanding of what's at stake.
It's people like you who allow the two parties to have their power. The only winning move is not to play their game. Think for yourself, and realize you are not their peon.