Re: [EM] fix to Rivest 3-ballot flaw! very simple

2006-10-04 Thread raphfrk

> From: [EMAIL PROTECTED]


> I posted it on http://groups.yahoo.com/group/RangeVoting/









The method amounts to allowing the voter to vote

FOR two candidates and AGAINST 1 candidate.



The AGAINST vote is a FOR vote for all the other

candidates.



Also, the AGAINST candidate has to match one of the FOR 

candidates and both FORs have to be different.



The voter can get a copy of any of the 3 votes.



(If that is an incorrect decription, please correct me)



However (from the RV list), Warren Says:



> Well... slight flaw. If I look at your FOR vote (either for vote)


> then I have no idea who you voted for. *But*


> if I look at your AGAINST vote,


> then I know who you did NOT vote for reducing the set from N to N-1.

> That is a bummer, I must admit. However, not a very big bummer?







However that assumes that the following is invalid:



1) FOR: A

2) FOR: A

3) AGAINST: A



This would be the case using Warren's stencil system as 

if a voter uses his FOR A stencil on ballot 1, the 

voter cannot use it for ballot 2.



However, if the mechanism just ensures that the AGAINST 

ballot matches one of the FOR ballots, then the problem 

disappears.



I would suggest that there are 2 sets of stencils.  Each 

set contains a FOR/AGAINST vote for each candidate.



There would be 4 ballot slots.  The voter places 4 ballots

in the slots. The voter then applies a stencil for each pair.  

This marks the ballots so that each pair has opposite votes.  

The voter then selects one ballot as his receipt and the other 

3 are cast.



The receipt will contain the opposite vote to the vote it

is a receipt for.  However, that's not a problem.



Also, I wonder if it would be a good idea to have 2 types

of ballot.  A FOR ballot and an AGAINST ballot.  It seems

pointless to mark the AGAINST ballot by marking FOR all

the other candidates on a FOR ballot.  The voter would

receive two pairs of ballots.



This removes the need for stencils entirelly.  A slider

would be moved up and down to select a candidate.  The

machine will then stamp both ballots at that place.

This automatically creates a FOR/AGAINST pair.  The

2 ballots would have to be shaped slightly differently

so that the voter can't place two FORs in the slots.



One issue is getting the ID numbers to match, for the 
receipt and its ballot and not for the other pair.  I am

not sure how easy that would be to accomplish.




 




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[EM] fix to Rivest 3-ballot flaw! very simple

2006-10-03 Thread Warren Smith
I posted it on http://groups.yahoo.com/group/RangeVoting/

now back in action for plurality voting.

(And to reply Juho Laatu, the problem is, plurality votign really cannot be
"split" into "cells" because the cell-entries depend on one another -
with approval and range they can be split because they do not depend.)

wds

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