[EM] Double Defeat Hare

[Richard, the VoteFair guy]

On 6/23/2024 8:34 PM, Kevin Venzke wrote:
> Double Defeat,Hare means you form a candidate ranking using the IRV elimination order and then you elect the first (i.e. best, last-eliminated) candidate in the ranking who is permissible under Chris Benham's Double Defeat criterion. The criterion says you can't be elected if you have less approval than a candidate who pairwise defeats you.

So the "Double Defeat,Hare" method requires that each voter indicate an 
approval cutoff within their ranked choice ballot?

So we cannot use the Double Defeat,Hare method on the Burlington 
election data, right?

How would the Approval cutoff be indicated on a ranked choice ballot on 
which the voter marks ovals in "choice" columns?  I'm asking because 
that's the only kind of ballot used here in Oregon, where everyone votes 
at home.

Since Ted mentioned the RCIPE method (ranked choice including pairwise 
elimination), I'll mention the RCIPE method does not require an approval 
cutoff, and the RCIPE method would have elected the Condorcet winner in 
the Burlington election.

Richard Fobes
(now the only Richard on the E-M list)
(FYI, I include "the VoteFair guy" as part of my email address to help 
someone scan the large number of election-method emails she gets in her 
inbox.)


> 
> The comma is key to deciphering the name.
> 
> Kevin
> votingmethods.net
> 
> 
> 
>   Le dimanche 23 juin 2024 à 22:03:06 UTC−5, Ted Stern <dodecatheon at gmail.com> a écrit :
> 
> Richard, I believe Double defeat Hare is also known as RCIPE.
> 
> https://electowiki.org/wiki/Ranked_Choice_Including_Pairwise_Elimination
> 
> On Sat, Jun 22, 2024, 07:43 Richard, the VoteFair guy <electionmethods at votefair.org> wrote:
>> On 6/22/2024 1:31 AM, Chris Benham wrote:
>>   > I think those of us who are extra hung-up about frustrating Burial
>>   > should look more closely at Double Defeat, Hare.  ...
>>
>> What is Double Defeat Hare?
>>
>> I didn't try to find it on Electowiki because lately that website has
>> not been responding when I click on links to it.
>>
>> Richard Fobes
>> the VoteFair guy
>> (and now the only Richard here)
>>