[EM] STAR

Forest Simmons forest.simmons21 at gmail.com
Thu Aug 10 17:19:15 PDT 2023


Score Then Automatic Runoff (STAR) elects the pairwise winner between the
two candidates with the highest score totals.

One of the biggest problems with this method is that there is an
appreciable likelihood that the winner W will be a candidate that is
pairwise dominated by some other candidate C, which means that C not only
scores higher than W on more ballots than not, but if there even exists  a
beatpath from W back to C, it will take at least three steps.

Most other extant methods have this same defect, but almost all of them are
hard to fix compared to STAR. This fact makes it easy for a tweaked version
of STAR to become arguably superior to any of these other methods.

1. Initialize a set S of candidates with the STAR winner.
2. If any candidate pairwise dominates the newest member of S, from among
such candidates add in to S the one with the highest score.
3. Repeat step 2 until the set S cannot be enlarged any further in this way.
4. Elect the last candidate to be added to the set.

Usually step 2 will be invoked only one or two times if at all ... so this
is not a big tweak.

With this tweak STAR becomes arguably superior to any method currently in
use.

The only other method currently in use that always elects pairwise
undominated candidates is Copeland.  But Copeland suffers from two fatal
defect that STAR does not have ... Copeland is neither Decisive nor Clone
Independent.

Will STAR proponents take advantage of this opportunity? ... or will they
pass it up?

fws
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