Borda Count
Forest Simmons
fsimmons at pcc.edu
Wed Jan 31 19:58:02 PST 2001
Suppose you have 16 candidates to rank. You know how each of them stands
on the four issues that you consider vital. No two have the same profile
on these issues, so if we represent "agrees with you" and "disagrees with
you" by the letters a and d respectively, the 16 candidates can be
identified by their profiles: aaaa, aaad, aada, aadd, adaa, adad, adda,
addd, daaa, daad, dada, dadd, ddaa, ddad, ddda, dddd
In an informal non-binding poll you are asked to rate them on a scale of
zero to 100%, so naturally you rate them in proportion to the number of
issues on which they agree with you (assuming all of the issues are
equally important to you).
aaaa gets 100%
addd, dadd, ddad, ddda get identical ratings of 75%
aadd, adad, adda, daad, dada, ddaa get identical ratings of 50%
daaa, adaa, aada, aaad get identiacl ratings of 25%
dddd gets 0% .
Next, in another informal non-binding poll you are asked to rank the
candidates.
Since you cannot distinguish all of them on the issues, you use looks and
personality to break up the groups with identical ratings:
aaaa > aaad > aada > ... > dddd
The second pollster immediately converts your rankings to a rating via the
Borda Count with rates between 0/15 and 15/15.
Which would you consider to be a more accurate representation of your
estimation of the candidates' abilities to represent your viewpoint in
the legislature?
Forest
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