I'd said:
Don't vote for Kucinich in the primary. Vote for Sharpton. Then vote for Nader in the general election (or maybe Camejo if he wins the Greens' nomination)
D. Gamble replied:
I seem to remember that in the 2000 Presidential election the effect of
voting for Nader was to allow the (probable) Condorcet winner Gore to be defeated
by Bush.
I reply:
No, that's not what happened. Gore probably won. Gore was "defeated" by Bush in the Supreme court only.
But you're making another mistake. If Bush had won the election, you'd want to blame that on the Nader voters. I'd suggest that the only ones to blame that on are the Bush voters (and maybe the voting machine programmers). Amazing announcement: Those who prefer Nader have no obligation to help someone else whom they don't like.
D. Gamble continued:
Mike, it seems very strange that somebody who writes as much on voting
strategy as you do should come up with something like this when faced with the
question of how to vote in a real election.
I reply:
Why is that, Dave? I've made it clear that my voting system goal is to get rid of the lesser-of-2-evils problem. At no time did I say that I'm a lesser-of-2-evils voter. I want a better voting system so that you won't feel a need to abandon your favorite in order to help a lesser evil. But I don't vote for lesser-evils.
Maybe you'll disagree, but I believe that there's such a thing as a candidate who doesn't deserve a vote. Usually, for me, that takes precedence over strategy.
Aside from that, though, my voting for people like Sharpton & Nader can be justified in terms of utility-expectation maximization strategy: As I've said, it seems to me that the public political elections have completely unacceptable candidates who might win. To put it differently, the candidates can be divided into 2 sets, such that the merit differences within each set are negligible compared to the merit difference between the 2 sets. Under those conditions, are you sure that you think that it would be good strategy to vote for a member of the worse set?
I know, you'll say that the probability that my vote could make or break a tie between Dean & Bush is greater than the probability that my vote could make or break a tie between Nader & Dean. But don't jump to the conclusion that Pdb(Ud-Ub) > Pnd(Un-Ud), or that the strategic value of Nader is less than that of Dean.
Candidate i's strategic value is the sum, over all j, of Pij(Ui-Uj).
Pij is the probability that, if there are 2 candidates between whom your ballot can make or break a tie, those 2 candidates are i & j.
In Plurality, one's utility-expectation maximizing strategy is to vote for the candidate with greatest strategic value.
In Approval, one's utility-expectation maximizing strategy is to vote (only) for all the candidates whose strategic value is positive.
In Plurality I vote for whichever acceptable is most likely to be able to take victory from an unacceptable.
In Approval I'd vote for all the acceptables.
Mike Ossipoff
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