It's a false choice.

First of all, pretending those are your only choices is like saying you can only choose between hamburgers and tacos; nothing else. You are pretending the rest of the menu doesn't exist.

Yes, there are other choices. Insisting you choose between those two, because "Democrat or Republican is the only realistic option," is a self-defeating belief. It will remain true as long as you believe it's true, not a moment longer.

For those who are upset with the Republican wing of the Boot-On-Your-Neck Party for nominating non-Republican Donald Trump, you could always vote for the actual Republicans who are running.