Single Transferable Vote (STV)

The Single Transferable Vote system is a form of PR used in the Republic of Ireland and Malta, and in some local, regional, or upper house assemblies in Northern Ireland, Scotland, India, Australia, New Zealand and the USA.

STV is the preferred electoral system of the Electoral Reform Society. It minimises wasted votes and, by linking several MPs to a multi-member constituency, ensures that many more constituents are able to approach a representative with similar views to their own than is currently the case.

- See more at: https://joe-sousek.squarespace.com/voting-systems#sthash.fnlnYB2h.dpuf