There is an issue with our electoral system which can allow an organized group to use strategic voting to gain more Borda points (and potentially more representation) by decreasing the value of their neighbors points. Thus happened in the January 2008 RA election and very fortunately did not significantly change the outcome of that election, but it has very significant consequences for our community and electoral system.
An Example
To explain what happened I will give an example using faction names A, B, C, and D, and two voters: Jane and Paula. Paula approaches Jane before the election, knowing that Jane supports faction B, and tells her that she favors faction A and asks Jane if she would please list A second on the ballot. Jane expects something like this:
Jane: B, A, C, D
Paula: A, B, C, D
The resulting scores would be: A = 7 (35%), B = 7 (35%), C = 4 (20%), D = 2 (10%). But instead the actual votes are:
Jane: B, A, C, D
Paula: A x x x
The resulting scores are: A = 7 (41%), B = 5 (29%), C = 3 (18%), D = 2 (12%). Notice two things about this example:
By using this tactic instead of a mutual ranking, Paula has won an extra 12% of the Borda points for her preferred faction over the Jane’s choice. The tactic also decreased the percentage score of Jane’s third place faction and increased the score of the her last place faction. In other words this tactic decreased the entire value of Jane’s vote except for the faction favored by Paula.
This Election
The reporting features of the new election system are designed not to provide names with election data, and I have never seen those. What I have seen is aggregate frequency counts (basically what I published), and I also have a data set with unidentified votes in random order.
In the January 2008 election, very early on the voting I noticed an anomaly with aggregates was pushing one party ahead in the Borda counts without a larger number of voters putting it first in the ranking. When I looked at the anonymous vote data set I noticed that a number of voters from that faction were eliminating all but their preferred faction, and that all the votes in question arrived within a short period of time.
I spent several sleepless nights worrying that election results would be substantially changed by these votes. CSDF had enough of a lead that it never was at risk, but this action clearly disadvantaged the other two parties that depend heavily on second and third rank votes for their points. I appealed to the SC so as to keep those smaller parties from being damaged through this strategy.
I am very very relieved to report that the number of voters who cast ballots later in the week corrected this situation, so that by the end of the election there was no difference in the outcome, either in the number of representatives nor in the ranking of the factions. We were very lucky this time.
Asking some questions, I was told that the faction in question held a meeting where this voting strategy was discussed and recommended (I assume the votes in question occurred immediately after the meeting.) I was also told that the faction did also intentionally canvass second place votes.
In spite of this, only about one third of the faction eliminated all other factions from their ballot, with those votes arriving in a block at the beginning of the election. It was by no means all of the voters in that faction. If end this strategy failed in that it did not improve the electoral outcome of the faction that used it, and may well provide a disadvantage in the next election.
A Quote from Lincoln
Several people have told me that the issue is a problem with the RA as it passed a bill that allowed this form of electoral manipulation. While, I do think the system should be changed (more on that below), just because something is legal is not necessarily a great reason to do it. Those who take an action are responsible for it’s consequences. To quote Lincoln’s Cooper Union address (via Krugman):
That is cool. A highwayman holds a pistol to my ear, and mutters through his teeth, “Stand and deliver, or I shall kill you, and then you will be a murderer!â€
Long Term Prospects
If the electoral system is not changed, there will be serious consequences for future elections. The question is, knowing that someone may well use this approach in the next election against you, can you afford not to use it also? It becomes a use-it-or-loose-it situation.
In game theoretic terms, this approach has the structure of a non-iterated multi-player prisoner’s dilemma. (see http://en.wikipedia.org/wiki/The_Evolut ... ooperation ) There are cases of the Prisoner’s dilemma where cooperation can arise, but those are generally in two player games where the game is played again and again an indeterminate number of times. Whenever you know that the game is about to end, the only rational strategy is non-cooperation, or taking advantage of the other player.
If we do not change the law, we will most likely revert to a simple majority electoral system. It will be the end of preferential voting in the CDS. Two of our factions that have, in my opinion, an important voice in our politics get most of their Borda points from second and third rank votes, and their participation will be all but eliminated. This is something we should fix before the next election.