[EM] Student government - what voting system to recommend?
Chris Benham
chrisjbenham at optusnet.com.au
Sun Apr 22 12:22:53 PDT 2007
Tim Hull wrote:
> Single-winner is tougher, but I think I'd use IRV or Plurality there
> to avoid confusion concerning different single-winner and multi-winner
> election systems.
Plurality is terrible. I somewhat prefer IRV to Approval and Range. How
many candidates normally or typically stand for the single-winner elections?
IRV tends to behave worse with many candidates.
> P.S. Here is why I don't like Condorcet - it allows weak or eccentric
> centrists to win.
> Consider the following example: a Republican, a Democrat, and a pro
> wrestler are running for U.S. president
>
> Votes are as follows
>
> 48% - Democrat/Pro Wrestler/Republican
> 5% - Pro Wrestler/Democrat/Republican
> 47% - Republican/Pro Wrestler/Democrat
>
> The pro wrestler beats the Democrat, 52-48, and the Republican 53-47,
> and thus wins. Under IRV, the Democrat would have won.
If the Democrat and Republican supporters really have a strong
preference for the wrestler over their least preferred candidate, what
is the problem?
If they don't, they have the option of preventing the wrestler from
winning by truncating. But I agree that Later-no-Harm is nice.
Chris Benham
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