[EM] Approval Voting vs Instant Runoff Voting

[LAYTON Craig]

Forest,

you wrote:

>I would like to see that example.  You must have submitted it before my
>time.

I posted it only a few days ago, but it was jammed in at the bottom of a
verbose message, so I'm not surprised if people didn't get to it.  Here it
is again (slightly reworded);

This question is open to all the strategically minded posters; Say with the
above utilities (100, 25, 20, 0 - assign A,B,C,D respectively).  One opinion
poll shows (and, being an approval election, these are approval polls so
they show the predicted winner), that A will get 36 percent of the vote, B
will get 40, C will get 45 and D will get 44.  

You even have information about the accuracy of the polls; accuracy within
5% of the predicted outcome is 90% (that is, 90% chance that A will get
between 31 and 41%), and, our general understanding of such polls claiming
this kind of accuracy is that it is more likely to be closer to the
predicted outcome than further away.  How should you vote?

Craig Layton