The supplementary vote

• How it works:

  1. Each voter gets two votes
  2. the person who gets over 50% on the first vote wins - if no one wins that then everyone is eliminated except the top two
  3. second votes are counted
  4. the candidate with the most first and second vote wins
• Where is this sort of voting carried out?

  reginal and city mayors

  police and crime commissioner
• what is a majoritarian electoral system ?

  1. candidates must gain a majority to win
  2. parties can get a majority of the seats without obtrianing a majority of the votes cast- means governments are often formed without the support of 50% of those who voted
  3. ensures one party obtains a majority of seats in the legislature
  4. associated with a strong single party gov
• 2021 London mayor election 


  Khan-40%-55.2%

  Bailey-35.3-44.8

  Berry -7.8-elimanted

  Rose 1.2- eliminated

  Fox-1.9- eliminated

  Niko -2.0- eliminated
• Outcomes of SV

  1. fewer votes are wasted compared to FPTP-Green party votes didn't know their second vote may have counted
  2. promotes a two - horse race- 2021 election everyone was eliminated except the two people
  3. makes sure a no one who is hated wins- due to the second preference they don't mind the other person
• 3 advantages of SV

  1. winning candidate can usually claim to have a majority win
  2. simple to understand
  3. all votes are relevant
• 3 Drawbacks to SV

  1. promotes a two party system - smaller partties have little chance of winning
  2. winner may only win by the second choice as they may not have had more votes on the first section
  3. can still result in wasted votes if a voter does not choose either of the candidates who make it to the second round