Supplementary vote

Majoritarian
How does it work?
1. Voters have two votes, a first and a second (supplementary vote)
  1. First choice votes counted
    1. If a candidate wins 50% of the vote, they are elected
    2. If no candidate reaches 50%, the supplementary votes are added to the top two candidates totals
      1. The other candidates are eliminated and any supplementary votes for the remaining two are added to their totals.
        The candidate with the most votes altogether wins
Single member constituency
Advantages
1. Ensures fewer voes are wasted than with FPTP
2. As winning candidates must gain 50% support, a broader range of views and opinions influence outcome
Disadvantages
1. The outcome of the election may be determined by the preferences of those who with their first choices support small, possibly extremist parties
2. Winning candidates could enjoy little first preference support and only succeed with the help of redistributed votes, making them only the least popular of the final two candidates
Where is it used?
1. London Mayor elections

Resource summary

	Created by Abbie Fisher about 10 years ago