Tuesday, 26 April 2011

Nun of Thee Above

UPDATE: FOR REASONS THAT YOU'LL SEE IF YOU READ THE COMMENTS SECTION, THIS WHOLE IDEA TURNS OUT TO BE A BIG PILE OF DOGGY-DO. MY APOLOGIES. I LEAVE THE POST UP ONLY AS A MEMENTO OF MY STUPIDITY.

The proponents of AV claim (and I hope that if you've been following these pages, you'll accept the claim is false) that AV guarantees that the winner has the support of more than 50% of those who voted. Even in those cases that the claim is true, it's still just a quirk of the fact that if a candidate doesn't get 50%, then they are repeatedly given additional votes until they do.

But if we really wanted all MPs to have more than 50% of the vote, even under First Past the Post, it would be quite simple:

If a constituency gives no candidate 50% support, then that constituency doesn't return an MP.

(Note that this approach wouldn't work under AV, since at least one candidate always gets more than 50%.)

It's a radical approach, but it has its pros and cons. The main pro is that it is something that would really encourage candidates to seek a broad base of support. The con is that it would leave many (perhaps most) constituencies unrepresented.

Under FPTP, and under AV, we do have a mechanism to indicate that we don't want any of the candidates to represent us at Westminster - we don't vote. At the last general election, 35% of the UK took that option, more than the fraction who voted for many of the winning candidates.

The problem is, there's more than one reason for abstention. It may be to wish a plague on all their houses, or it may be because we couldn't be bothered, or were away on business, or whatever. We can demonstrate that we really do care enough to go to the polling station, by turning up and then spoiling our paper, but even then there is no way to distinguish between the conscientious abstainer and those can't tell the sharp end of the pencil from the blunt one.

What we need is a genuine box in which to put our cross, labelled NOTA - None Of The Above.

Would it have much effect? Perhaps not.

Under FPTP, the NOTA votes would be counted and would certainly be of interest if NOTA came in third or second or even (dare we hope?) first place. But it wouldn't actually make any difference.

Under AV, NOTA would have less impact. The winning candidate would still get over 50% (it can't be avoided). If a voter put NOTA as their first choice, and then listed the other candidates, then they would be saying, 'I don't want any of these candidates, but if I have to have one of them, here's my order of preference.' Well, the fact is you do have to have one of them, and so your NOTA vote would instantly be dismissed and the process would carry on as normal with your second-choice vote being counted.

But what if, as suggested above, you could have none of them? What if, under FPTP or AV, NOTA was counted like any other candidate and could win. It would be rare I think, but it's an option that would allow voters to truly express themselves. Under FPTP things would be, inevitably, simple. If NOTA gets more than any other candidate then NOTA wins and the constituency returns no MP.

Under AV things are (inevitably) more interesting. The NOTA selection could go anywhere in the list that the voter chooses - top, bottom, or middle. And suppose you list the candidates in the order A, B, C, NOTA, D, E , F. That would be saying, 'I'm happy to have A or B or C as my MP, and of them, here's my order of preference. I don't want any of D, E, F, but if it comes to it, I do still have a order of dislike.'

That's really quite expressive. Under standard AV, however much you loathe and despise candidate F, you still have to list them to get the most of you vote, you put them last, seemingly suggesting that you would like them to be your MP, just that you'd like others more. By putting that NOTA break in there, you're effectively producing one list of candidates you like and another of candidates you don't, and putting the BNP (sorry, candidate F) at the top of that list. (It has to be said that this is a point of perception, not something that directly effects the result, but perception is important.)

There's still one problem, however. In a constituency where NOTA wins, the people don't get a representative in Parliament. The best I can come up with is that the runner-up gets forced to go to Westminster, but doesn't get a salary. I can see the fairness of it, but I can also see how it might produce an MP who slightly less than enthusiastic about their job - which was really the whole motivation for electoral reform.

But that's a detail. The important thing is to modify AV by adding this NOTA option. So who's with me? Who will make their voice heard? Who will climb up onto the roof tops and shout out the slogan to all who will listen:

'Vote NOTA-AV!'

Monday, 25 April 2011

Why Stop at 50%?

I've been too negative - pointing out inaccuracies in claims made in favour of AV, when nobody really cares how the system actually works anyway; it's about the spirit of the change.

So for this post and the next, I'm going to be more positive, and suggest some alterations to the electoral system that might in some small way improve things. (And for this first one, I'm indebted to Katie Piatt for setting me along this line of thought.) Let's begin.

A supporter of First Past the Post, a supporter of AV and a third-world dictator (I won't name them) are sitting in a pub (I will name it - the Good Companions, in Brighton).

The FPTP supporter says, 'Under my system, the winning candidate has the highest number of votes.'

The AV supporter says, 'Ah! But under my system I can guarantee that the winning candidate has more than 50% of the votes.'

The dictator says, 'That's nothing. Under my system I can guarantee that the winning candidate gets 100% of the votes.'

As it turns out, both the FPTP and the AV supporter are understating their positions.

In FPTP, we can make guarantees about percentages. If there are four candidates, then it is guaranteed that the winner will get more than 25% of the votes. If there are three candidates, then it's 33%. If two, then 50% (the equivalent of the last round of AV) and if there's only one, then you can guarantee 100% support (the dictator's system).

So if we want, as AV claims, more than 50% support for the winner but still have FPTP, that's easy - we just restrict the number of candidates to two. The problem is obvious - how do we determine those two?

AV is essentially an answer to that question. It manages it all in one election, but effectively takes multiple votes across a series of elections. If there are four candidates in total then we have a vote between those four. The loser drops out and their votes are transferred to the next round of three. At this stage we can only be sure that one candidate gets at least 33%, so again we drop out the loser, transfer the votes and now have an election of two in which someone (it's mathematically guaranteed) gets more than 50% and the result is called.

But why stop there? Why halt this repeated process of dropping out the losing candidate? Now the second place candidate drops out, his votes are transferred to the only remaining candidate, and the winner can be declared as having 100% support.

But that's silly. Clearly no one believes that the winner has 100% support, in just the same way that no one believes it in a dictatorship. The winner may be the most popular candidate, but the 100% support is meaningless - it's just an inevitable consequence of the mathematics.

But in just the same way, under AV as it is proposed, the 50% is meaningless - it's just as much an inevitable consequence of the maths, a statement which though true, cannot be false. I'd like to see a winner under AV who didn't get 50% of the vote.

I say that the percentage is meaningless, but perhaps a better term is 'not interesting'. If I were to tell you that the last five presidents of France all got more than 50% of the vote in the final round, it would not be interesting. And I use the term in a slightly technical sense - by 'not interesting' I mean it provides no information that you couldn't otherwise have inferred. French presidents have to get more than 50%, just as AV candidates do - that's the system.

However, if I told you that in 2007 Sarkozy won with 53%, whereas in 2002 Chirac won with 82%, that would (might) be interesting. Clearly there was something different about Chirac's election compared with Sarkozy's. (There was - Chirac was standing against the fascist Le Pen.)

But under AV, as currently proposed, we don't get that sort of information. If I were to tell you that in one constituency the winner was Smith with 53% and in another the winner was Jones with 58% the actual percentages tell you nothing of interest. Jones my actually be less popular than Smith.

Why? Well in Jones' constituency, voting went to the final round. Jones got 58% and his opponent got 42%.

But Smith reached the 50% finishing post while there were still three candidates left. He got 53% and his opponents got 20% and 27%. If the AV process had continued to the next stage and the third place candidate had dropped out then the redistributed results might have given 63% (or more, or less) to Smith and 37% to his opponent. Now Smith's 63% can be more fairly compared with Jones' 58%.

So why is this not the way AV is proposed to work? Why do we stop counting as soon as one candidate passes 50%? Well, it could be argued (I have done) that the purpose of elections is primarily to choose an MP, not to divine other related information. But I'd also argue that getting other information is useful, if it doesn't affect the actual result, which this doesn't.

It could be argued that counting every constituency through to the final round would be expensive, but we already know that there is no additional cost to AV elections, so even if my proposal proved to be twice as expensive, twice nothing is still nothing (and that's the simplest bit of maths you're likely to see on this blog for a long time).

It could be that proponents of AV realise that if this approach were followed then in some seats (safe seats under FPTP and still safe under AV) this extra transfer of votes might mean the winner getting maybe 80% or occasionally 90%, and that's getting a bit too close to the dictator's 100% and could give away the game that all the percentages are just artefacts of the system. I doubt it, because I doubt many of AV's proponents have thought it through to that extent.

But that's my proposal. If AV succeeds at the referendum, make a slight amendment to it:

In every seat, counting should carry on to the final round of two candidates, even if a winner can be determined earlier, so that comparison of winning percentages across constituencies operates on a level playing field.

Any takers?