[EM] Approval vs. IRV

[Brian Olson]

On Oct 15, 2004, at 7:24 AM, Eric Gorr wrote:

> At 11:15 PM -0700 10/14/04, James Cooper wrote:
>> could you explain the details of how ER-IRV (whole and fractional) are
>> tabulated?
>
> I have Equal Ranking IRV Whole & Fractional implemented within my 
> voting calculator.
>
> You should be able to discern how things get tabulated easily enough 
> by selected the 'Tell Me Everything' option.
>
>   http://condorcet.ericgorr.net/

Interesting. I include three variations on IRV in my election 
calculator ( http://bolson.org/v/vote_form.html )
Instant Runoff Vote (tied-ranking votes are split)		all choices in the 
tie get an equal fraction
Instant Runoff Vote (tied-ranking votes are duplicated)	all choices in 
the tie get a whole vote
Instant Runoff Vote (tied-ranking votes are disqualified)	no choices in 
the tie get any vote

I'm not sure how that maps to your combinations of:
{ Prior Round Totals, Deterministic, Random } { Whole, Fractional }

I suppose the options I'm missing are:
(tied-ranking votes are given randomly to one of the tie)
(tied-ranking votes are given to first on the ballot)
(tied-ranking votes are given ...) ?

The variations I implemented were obviously rational and fair to me. I 
may need some convincing of other variations.
I think I'm allergic to the use of randomness in election methods, so I 
don't plan on implementing such an option.

Brian Olson
http://bolson.org/