"The only thing necessary for evil to triumph in the world is that good men do nothing"It has nothing to do with keeping the hem of my robe clean, but my conscience.
You can support evil both by action and inaction, and if you will only vote for those who have no taint of evil, there is one and he's coming back - but I don't know when
It might be better to vote for the least imperfect option who can actually win in the interim
Voting is pretty much a zero sum game