The Students' Union website uses the Single Transferable Vote method, where voters rank the candidates in order of preference.
By voting this way, you can tell us that if your favourite candidate doesn't win, then you don't mind your second favourite winning, or third favourite, or so on.
When voting closes and we count the results of the election, we require a candidate to have over 50% of the votes to win. If no candidate gets over 50% of the votes, then we eliminate the candidates with the lowest scores and redistribute your voting preferences until someone does.
If you want to find out more about STV voting, you can watch this helpful video here.