I vote for the best candidate available who has a chance of winning. Mostly in recent years, I vote for the lesser of the available evils because there are no candidates running that I can actually support.
What's the difference between options 2 and 3?
If you expect people to be rational, you aren't being rational.
If you notice something good in yourself, give credit to God, not to yourself, but be certain the evil you commit is always your own and yours to acknowledge.