[EM] Sports and 'The Condorcet Mindset'

Adam Tarr atarr at purdue.edu
Mon Dec 2 14:46:44 PST 2002


Steve Barnes wrote:

>Alex Small seems to beg the question, how much more manipulatable is the 
>Borda
>Countthan, say, the IRV? It seems to me that we should quantify the DEGREE 
>to which
>it suffers this problem.

Is there a way to quantify this?  Probably not a way that everyone could 
agree on.  But how about this example:

60% A
39% B
1% C

All the voters assign zero utility to the other candidates.  In just about 
every voting system except Borda (including IRV), The A voters are 
guaranteed to win.  In Borda, the B voters can win my voting BCA.

-Adam


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