From the links above, it seems obvious that the vast majority of exhausted ballots in these races were due to the 3-choice limit, and not from people voluntarily undervoting.
I withdraw the "obvious" part of my statement, after realizing that I misinterpreted the results tables. But the statement still appears to be true, since most (80-90%) votes seem to have transferred in the early rounds, and the cumulative "Exhausted Ballots" totals only grew rapidly near the final rounds.
Bart ---- Election-methods mailing list - see http://electorama.com/em for list info
