As the title states, the rules for winning matters. There are three popular methods outside of the majority rule:
(1) Plurality: The topic with the most first-choice votes ("preferneces") wins.
(2) Instant Runoff: Eliminate the third-place topic (in number of preferences), and add the 2nd-choice votes of
Create a scenario where we have fifteen votes for three candidates and depending on the rules for winning there is a completely different winner each time.