Help:STV

Single transferable vote is a voting system that has been used on a number of occasions on the wiki since the first moderator election of July 2011. STV can be used to produce both multiple and single winners from multiple choices, and in the latter case is the same thing as instant-runoff voting (IRV). While it is often lauded for its fairness the system is notoriously difficult to understand.

TL;DR - what do I do‽
If the vote is STV there will be more options than just "yes/no/goat." The simplest thing to do is to rank the options in order from what you like best to least, and let the complex mechanics of STV sort out the rest. You don't have to rank all the options, or even more than the one, but if you rank too few then you run the risk of your vote not counting. But ranking all of the options is a waste of time as the last few simply don't matter.