update: this is fixed now; one piece of info which I think is still missing, is that you should only rank those candidates whom you consider suitable for the position. The way it is phrased now, and the way the voting box asks for "Drag next selection here", might give the impression that all candidates have to be ranked.
I copy from Catija's answer: The other caveat is that you should only rank candidates you wish to win the election, do not rank a candidate who you feel is a bad choice for the position! If you dislike a candidate but vote for them anyway, there is a (unlikely) chance that your vote may actually go to that candidate - who you don't want to win.
the page where we can vote says at the top "Each voter may select up to three candidates." But elsewhere on the same page it says "When voting, you may select as many or as few candidates as you would like." Which is it?