Friday, 29 April 2011

Voting Reform 5: Who's votes are counted twice? #referendum

The biggest potential issue I can see with AV - the thing that is most puzzling at first - is the assertion that the votes for extreme minorities are the ones which are recounted first.

So I've been playing with some numbers, trying to come up with a scenario where the fact that the last-place candidate is eliminated first and their votes redistributed first makes a difference. I can't find one.

You eliminate the definite loser each time, redistributing votes starting with the smallest number. If the smallest number of votes plus the largest (the leading candidate) make more than 50%, all the other votes combined must be less.

Whichever way you look at it, because the winner needs a 50% majority, the only result you can get is the right one, with majority support.

Or can anyone come up with a scenario where it doesn't work?

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