I didn't expect to be downvoted for ...

That's not what you got downvoted for. You got downvoted because it's Saturday.
Then you got downvoted because you didn't expect to be downvoted.
And then you got downvoted for your update.

Also, doing away with the - vote effectively solves the problem of people trying to become the Most Unpopular.

You wish. 1st, I don't think we have that problem and 2nd, trolls would be trolls even if the XP system did not exist at all.

In an electoral poll (assuming a compulsory voting system), you either cast a vote on a certain candidate or you cast an empty vote (an invalid vote). I don't think you can cast a - vote on any candidate.

Huh? Once it's published, you can't update the ballot on election day. You shared some ideas, some monks felt positively about it, some monks felt negatively, nobody is trying to elect you. After noticing the tiniest amount of negative feedback (statistically irrelevant) you felt compelled to update your meditation and reflect on that, thus causing this tangent. That's not what the update feature is for.

update: :D