Voting Systems

How the alternative vote works – interactive guide

http://www.guardian.co.uk/politics/interactive/2011/apr/08/how-alternative-vote-works-interactive

AV+
http://en.wikipedia.org/wiki/Alternative_Vote_Plus_(AV%2B)

Single Transferable Vote

http://en.wikipedia.org/wiki/Single_transferable_vote

Various links about UK 2010 elections re "what if it was done with AV system"

http://www.guardian.co.uk/news/datablog/2010/may/10/proportional-representation-general-election-2010

http://www.housepricecrash.co.uk/forum/index.php?showtopic=142514