The magic is this: there are no other candidates who can win because you didn't vote for any of those in previous elections and there won't be in the next because you won't now.
It is like you ask someone to chose between death by fire, death by drowning OR finding the love of your life. Then they respond with: I don't want to drown! Or worse, they ask what other people chose.
Imagine yourself making your own choices. Picture it for a moment, doesn't it sound terrifying?
One should also look at it from the perspective of the other candidates. I mean those not part of the uniparty. Imagine making an effort to convince people to vote for a sanity riddled election program. The level of insult people sink to in order to NEVER even consider it.