[EM] Later-no-harm definition
chrisbenham at bigpond.com
Mon Dec 22 08:17:02 PST 2003
Quoting D.R. Woodall,
"Later-no-harm: Adding a later preference to a ballot should not harm
any candidate already listed".
In other words, if a method meets Later-no-harm then voters can never
get an advantage by truncating.
It is met by IRV, but is incompatible with Condorcet.
I got this from what I found to be the very interesting and illuminating
paper "Monotonicity and Single-Seat Election
Rules" by Woodall, and uploaded by Marcus Schulze:
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