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Approval Voting and the Florida 2000 Butterfly Ballot.
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: Actually multiwinner Approval elections are an attractive idea - but only when candidates are truly evaluated independently - that is if the number of winners can be variable and the approval rating needed is fixed before the election.
: Actually multiwinner Approval elections are an attractive idea - but only when candidates are truly evaluated independently - that is if the number of winners can be variable and the approval rating needed is fixed before the election.
:: For example a great application would be a poll for which ALL candidates with more than 15% approval are included in a presidential debate. That's a very valid poll since you know the more you vote for the more winners there will be and your vote for a second favorite CAN'T hurt the chances of winning for a first favorite. --[[User:Tomruen|Tom Ruen]] 05:37, Jun 27, 2004 (UTC)
:: For example a great application would be a poll for which ALL candidates with more than 15% approval are included in a presidential debate. That's a very valid poll since you know the more you vote for the more winners there will be and your vote for a second favorite CAN'T hurt the chances of winning for a first favorite. --[[User:Tomruen|Tom Ruen]] 05:37, Jun 27, 2004 (UTC)

== Approval Voting and the Florida 2000 Butterfly Ballot. ==

Some thoughts:

* If Approval Voting had been in force in Florida 2000, then the mistakenly double marked ballots (for Gore and Buchanan) would still have counted. No votes would have been voided. Gore would have got all his genuine votes, while Buchanan was so far behind it would not have mattered it he got some bonus or unintended approval votes.

* Does Approval Voting comply with "one man one vote"? Yes it does, because any Buchanan votes do not really matter because he was so far behind, and Gore only ever recieves "one useful vote per voter".

* Has Approval Voting ever actually been used anywhere?

* The biggest disadvantage of Approval Voting may be that it distorts the election statistics - the total number of votes may appear to add up to more than 100%. Something would need to be done to "normalise" the results.

* If 999 Nader voters had approved of Gore, Gore would have beaten Bush.
* If 999 Buchanan voters has approved of Bush, Bush would still have won.
* Note that there were 3rd Party candidates spoiling things on both sides.

[[User:Syd1435|Syd1435]] 09:23, 2004 Oct 4 (UTC)

Revision as of 09:23, 4 October 2004

It is easily reversed as disapproval voting where a choice is disavowed, as is already required in other measures in politics (e.g. representative recall).

I don't see why approval voting is any different than any other system for "disapproval". The case cited (representative recall) is not even a single-winner contest. (throw all the bums out :-). It is a single-candidate contest if anything.... I propose dropping that text. NealMcB 18:10, 2004 Apr 29 (UTC)


Reads well now. The point about approval and preference voting both being single-vote systems is now there, but no hierarchy of 'this is a type of that' is anywhere in the descriptions of the voting systems themselves, which is fine, except for disapproval as a variant of approval, which seems the only clear inverse. 15:02, 2003 Jan 17

There was an earlier article here once, but it must have been censored.


Under Approval_voting#Potential_for_Tactical_voting I don't like this statement:

A good strategy is to vote for every candidate the voter prefers to the leading candidate, and to also vote for the leading candidate if he is preferred to the current second-place candidate. When all voters follow this strategy, the Condorcet winner is almost certain to win.

It is an opinion statement and I don't know what qualifications should be made for it. Who says this is a good strategy? How do we measure the "leading candidate"? Is that an approval measure or a plurality measure?!

I've done my own thoughts on Approval Voting and I judge:

A good strategy is to vote for the same candidate you would vote for in a plurality race, and also any candidates you prefer more (ignoring any assumption that those candidates can't win).

This stategy is more practical, and is MUCH more likely to be used, even if it doesn't help the Condorcet Winner.

It would merely allow weak candidates a fair measure of support (approval) without throwing the election against a preferred stronger candidate. Approval offers little to voters in a strong three-way race when the top leader is not predictable. Then approval is only useful as a maximal power "negative vote" against feared competitor(s). (Voting A=1,B=1,C=0 in approval is mathematically equivalent to A=0,B=0,C=-1)

I won't change anything for now, but I appreciate opinions. I accept the existing "good strategy" statement as "Good strategy to elect a Condorcet Winner".

Does anyone else have a problem with the existing "good strategy" statement? Any suggestions for changes?

Thanks! --Tomruen 00:02, 2 Jun 2004 (UTC)

The problem with your phrase is that the vote in a tactical vote in a plurality race may also depend on identifying the leading candidates in a plurality race, the leading candidates may be different under different rules and the information may not be avialable on how others might vote in a plurality race. For those who wish to vote in a way which is unlikely to affect the result, tactical voting advice is unnecessary, and I think the current text makes reasonable sense - the leading candidate obviously means in an approval measure. --Henrygb 23:16, 26 Jun 2004 (UTC)
Hmmm... my first assumption was "leading candidate" meant leading in a single-vote count since it is pretty much meaningless to poll voters with approval votes in a poll. Approval polling is too strongly open to manipulation, even unorganized manipulation - individuals playing around for fun or profit. I accept the same argument exists with single-vote counts, but people still want their true favorite to poll well and are less likely to play unless they really have no preference. --Tom Ruen 05:37, Jun 27, 2004 (UTC)

My question is why approval voting is single winner only. Is it called something else when the top n candidates are elected? --Henrygb 23:16, 26 Jun 2004 (UTC)

Approval certainly could be used for multiwinner elections and doesn't have or need any different name. In practice there's less reason to need it. The "standard" multiwinner election method is called Plurality-at-large or Bloc-voting which allows as many votes as candidates. It's less often people would want to "overvote" with multiple winners except as a defensive vote against one or more most disliked candidates. A more likely vote in plurality-at-large is voting for less candidates than winners because you don't want your lower choices to defeat higher ones.
Actually multiwinner Approval elections are an attractive idea - but only when candidates are truly evaluated independently - that is if the number of winners can be variable and the approval rating needed is fixed before the election.
For example a great application would be a poll for which ALL candidates with more than 15% approval are included in a presidential debate. That's a very valid poll since you know the more you vote for the more winners there will be and your vote for a second favorite CAN'T hurt the chances of winning for a first favorite. --Tom Ruen 05:37, Jun 27, 2004 (UTC)

Approval Voting and the Florida 2000 Butterfly Ballot.

Some thoughts:

  • If Approval Voting had been in force in Florida 2000, then the mistakenly double marked ballots (for Gore and Buchanan) would still have counted. No votes would have been voided. Gore would have got all his genuine votes, while Buchanan was so far behind it would not have mattered it he got some bonus or unintended approval votes.
  • Does Approval Voting comply with "one man one vote"? Yes it does, because any Buchanan votes do not really matter because he was so far behind, and Gore only ever recieves "one useful vote per voter".
  • Has Approval Voting ever actually been used anywhere?
  • The biggest disadvantage of Approval Voting may be that it distorts the election statistics - the total number of votes may appear to add up to more than 100%. Something would need to be done to "normalise" the results.
  • If 999 Nader voters had approved of Gore, Gore would have beaten Bush.
  • If 999 Buchanan voters has approved of Bush, Bush would still have won.
  • Note that there were 3rd Party candidates spoiling things on both sides.

Syd1435 09:23, 2004 Oct 4 (UTC)