Arguments in favour of electoral system

• Electoral reform is necessary because FPTP delivers disproportional results In 2015, roughly 5 million Green and UKIP voters were effectively disenfranchised, with their parties winning only one MP each

  FPTP discriminates against parties whose vote is thinly spread throughout the country but rewards those parties whose vote is concentrated in enough places to win several seats

  Voters are therefore forced to vote tactically

  Many votes are wasted, particularly in 'safe seats'
• SV wastes fewer votes Many Green Party voters chose Labour candidate Sadiq Khan as their second preference in the 2016 London mayoral election. This support proved decisive in Khan's eventual victory after the second round of counting

  SV tends to ensure that the 'least hated' candidate wins because it seeks to propel the winning candidate as close to 50% of the vote as possible