We use a voting system to rank up to N choices in order by preference (where N is set for each poll)

You do NOT have to rank the maximum number of choices. Loosely speaking, we are using an optional preferential voting system; strictly speaking the voting system we are using is called Borda Count.

Click the add > link for your top ranked choice, then repeat for your 2nd, 3rd, ... choices.  If you wish to reorder your selections you can drag them up or down to reorder in the Your Vote column. You can also use the x links to remove selections(s).  When you are happy, press the Vote button.

Once you have voted, you can change your vote by using the Cancel You Vote button and then  re-voting.