[EM] breakdown of Oakland mayor ballots

[Bob Richard]

On 11/13/2010 8:09 AM, Kristofer Munsterhjelm wrote:
> Sand W wrote:
>> Here are the results on an actual election: 
>> http://www.demochoice.org/dcresults.php?poll=OakMayor&type=table 
>> <http://www.demochoice.org/dcresults.php?poll=OakMayor&type=table>
>>
>> Perata (or maybe someone in his camp) accuses the other candidates of 
>> "gaming the system" by promoting each other as 2nd choices.
>>
>> Some challengers tried to do that to IRV-leader Kriss Worthington 
>> too, but he won by a landslide.
>
> Unfortunately, there isn't enough data here to check who would won 
> under other methods, except for Plurality (where Don Perata would have 
> won). To find out the social order for a Condorcet method, one would 
> need the Condorcet matrix, and for most other methods, the raw ballot 
> data itself.

Raw ballot data is here:

     http://www.acgov.org/rov/rcv/results/OaklandMayor/ballot_image.txt
     http://www.acgov.org/rov/rcv/results/OaklandMayor/master_lookup.txt
     http://www.acgov.org/rov/rcv/results/ballot_image_help.pdf

Here is the Condorcet matrix from these data files (entries are the 
number preferring the row candidate over the column candidate). If your 
email program doesn't handle HTML tables very well, this might be scrambled.



	ARNOLD FIELDS 	DON MACLEAY 	DON PERATA 	GREG HARLAND 	JEAN QUAN 	JOE 
TUMAN 	LARRY LIONEL ''LL'' YOUNG JR. 	MARCIE HODGE 	REBECCA KAPLAN 
TERENCE CANDELL 	Write-In
ARNOLD FIELDS 	0 	4476 	3174 	4286 	3527 	3601 	4487 	4403 	3614 	4328 
4680
DON MACLEAY 	6031 	0 	5018 	5912 	4277 	5209 	6119 	6026 	4357 	6064 	6257
DON PERATA 	65149 	65165 	0 	65011 	51720 	59033 	64963 	63702 	53661 
64338 	65308
GREG HARLAND 	5169 	5312 	3582 	0 	4331 	3667 	5382 	5244 	4607 	5087 	5500
JEAN QUAN 	74283 	73079 	53778 	74144 	0 	63212 	74108 	72437 	50544 
73336 	74460
JOE TUMAN 	45690 	45641 	34776 	45562 	29941 	0 	45752 	45239 	29005 
45475 	46025
LARRY LIONEL ''LL'' YOUNG JR. 	6385 	6427 	4054 	6482 	4706 	5753 	0 
5604 	4897 	5898 	6580
MARCIE HODGE 	16536 	16551 	10194 	16526 	10489 	14599 	16240 	0 
12082 	15707 	16709
REBECCA KAPLAN 	68989 	67789 	49749 	68929 	44863 	58003 	68684 
67102 	0 	68293 	69269
TERENCE CANDELL 	10271 	10386 	6585 	10257 	7645 	9152 	10151 	9520 
8384 	0 	10563
Write-In 	1584 	1577 	899 	1575 	1098 	1332 	1562 	1516 	1191 	1557 	0




>
>> What you could really do if you are serious about promoting a 
>> different ranking system is to download  the "Demochoice Code" and 
>> rewrite it to use your preferred voting system, then put it online, 
>> because the code is public domain.
>
> A similar poll system, CIVS, uses Condorcet methods (one can choose 
> whether to use Schulze, Ranked Pairs/MAM, or "Smith,IRV"). The source 
> code is freely available at 
> http://www.cs.cornell.edu/w8/~andru/civs/changelog.html .
> ----
> Election-Methods mailing list - see http://electorama.com/em for list 
> info
>

-- 
Bob Richard
Executive Vice President
Californians for Electoral Reform
PO Box 235
Kentfield, CA 94914-0235
415-256-9393
http://www.cfer.org

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