[EM] Burr dilemma in Portugal 1986 / wrong way elections / approval voting / IRV failures

2006-07-14 Thread Warren Smith
I made a long list of wrong way elections thru history at
http://www.RangeVoting.org/FunnyElections.html
and also discussed it in this wikipedia article:
http://en.wikipedia.org/wiki/Wrong-way_elections

Unfortunately certain wikipedists attacked and want to remove this article.
If you wish, you can express your support for keeping it, by going there, 
clicking
on the box thing at the start of the article saying article under protest
and defending the article, and/or improve the article yourself by editing it.

Some interesting facts from this collection of historical examples includes
  1.  runoff failed to deliver the Condorcet winner (whom I believe in these 
cases was
clearly the right winner to have) in Chile 1970 and Peru 2006 as well as perhaps
in several other (less clear) cases.

  2. Approval Voting plausibly would have failed due to Burr Dilemma in 
Portugal 1986,
see
   http://www.RangeVoting.org/BurrDilemma.html

  3. It is not clear to me but it is plausible that some Condorcet systems 
and/or
Range Voting would have delivered the right winner in every case inthe big 
table.
It would take considerable research (or perhaps it just is impossible to say)
whether and when that was true.  Particularly unlcear are certain plurality 
elections
with a large number of candidates in which I have no idea who the right winner
should have been, some of these listed on the right hand side of the big table 
as
an aside to the Liberia 2005 entry in red print.   Those kind of elections
are nearly random.

  4. plurality really fails a lot, numerous examples tabulated.
Warren Smith
http://www.rangevoting.org

election-methods mailing list - see http://electorama.com/em for list info


Re: [EM] Competitive Districting Rule

2006-07-14 Thread James Gilmour
Juho Sent: Friday, July 14, 2006 10:22 PM
 The Scottish situation sounds to me like a multi-party system 
 (that has emerged under different rules) has gotten trapped 
 in a two-party EM, and this kind of mixture is not a pretty 
 match (looks actually quite terrible).

No, not at all.  For UK (Westminster) parliament elections the whole of the UK 
has used only FPTP (simple plurality) in
single-member districts for many decades, in most case for more than 100 years. 
 We all also used the same voting system
for local government elections (the only other public elections we had until 
comparatively recently).  In the elections
after the 1939-45 war, the two main parties (Conservative and Labour) got 
around 90% of the total vote (96.8% in 1951).
The third party was the Liberals (now Liberal Democrats) who, in elections 
after 1945, got around 9% of the vote, but
only 1% of the seats.  Despite Duverger's law, support for the Liberal 
Democrats has grown and in 2005 they had 25% of
the vote and 9.6% of the seats.  Eight smaller parties also have seats in the 
UK Parliament.  So there has been a
three-party system across the whole of the UK for some time.

In Scotland the SNP (Scottish National Party - campaigning for independence) 
became a significant force in 1970, gaining
11% of the vote, again despite Duverger's law.  In the October 1974 election 
the SNP peaked at 30.5% of the vote, and
they now get around 20% of the vote (but far fewer seats).  So In Scotland we 
have had a four-party system for the past
30 years, all based on single-member districts and the simple plurality (FPTP) 
voting system.


 I guess the other three parties were fed up with 
 conservatives taking too many seats (more than PR would 
 allow?) and decided to join forces.

No, the Conservatives were UNDER-represented in Scotland.  In the 1992 election 
they got 26% of the votes but only 15%
of the seats.  But the Conservatives had formed the UK Government (the only 
government we then had) since 1979, a period
of 18 years when the 1997 election was called.  The Conservative Government was 
increasingly disliked (!!) in Scotland.


 The others obviously got 
 their revenge and now took more seats than PR would allow :-).

No, this was NOT a move by the other parties.  The Scotland Tory-free 
campaign was a grass-roots campaign among
electors.  There were some websites exchanging information among electors, but 
the parties all stayed very quiet on the
subject.


 I tend to think that if voters are clever enough to make the 
 1997 tactic work, they would also be able to use full PR 
 right if they would be given the chance.

Yes indeed!  The Scottish Parliament is elected by MMP and our electors have 
(mostly) shown great ability to manipulate
that voting system (so far).


 A good voting system 
 is anyway such where one can vote based on one's sincere 
 preferences. And I do believe better EMs exist than the poor 
 multi/two-party combination of 1997.

STV-PR is probably the best way of allowing voters to express their sincere 
preferences.


 On STV:
 STV gives at least the option of giving first position to a 
 local candidate and second to some non-local alternative.

I don't understand this comment.  With STV-PR as I know it, ALL the candidates 
are local, ie all within one
locality-based multi-member district.  If any party is so stupid as to include 
some carpet-baggers in its team of
candidates, the voters will deal with them very severely.  When you have 
community-based multi-member districts for
STV-PR, the term local takes on a new meaning, especially in rural areas 
where there are likely to be several
significant clusters of population.  Then you want to make sure your team of 
candidates do not all live and work in the
same part of the district.  This applies even in densely populated cities.


 This scenario has however the problem that typically voters 
 tend to vote well known candidates, and they often come e.g. 
 from the capital, not from the local community. I guess this 
 is one reason why EMs often force people to vote only the 
 local candidates.

STV-PR encourages the electors to learn more about more candidates, but they 
can vote however they want, eg by party, by
locality, by women before men, by ethnic community, by some pressing local 
issue, by any combination of these, etc.  I
may not think much of the criteria you used to select your preferences, but 
they are your criteria and in a democracy,
your criteria are as valid as mine or anyone else's.

I know that by promoting STV-PR I shall help to secure the election of some 
candidates whose political views I oppose,
and I know that I shall be helping to empower some voters who, in my view, make 
very poor choices based on very poor
criteria.  But that's democracy and I do believe in democracy.


 STV style has the problem that voters need to have lots of 
 information about the candidates. Or maybe they'll just vote 
 the most famous ones. My ideal