Better quorum change proposal, with justification
Here's the nightmare scenario, under Manoj's amendment, which I think
John Robinson may have been trying to come up with. Consider two options,
A and B, and the default option D. Let the quorum requirement R=20.
39 people show up to vote. These are their preferences (most prefered
on the left, = denotes two equally preferred options).
Look at the pairwise results:
A vs. B
38 to 1
A vs. D
19 to 0 (20 no preference)
B vs. D
20 to 19
A is the Condorcet winner.
Under Manoj's proposed amendment, A fails to make quorum and is dropped,
and B wins (20 to 19).
Now, with such a low vote, it may seem reasonable for the default option
to win. But it's certainly not reasonable for B to win.
If A had a supermajority requirement and B didn't, then it would be
reasonable for B to win. But this isn't the case.
This is a serious defect in A.6 part 2.
> 2. If the ballot has a quorum requirement R any options other
> than the default option which do not receive at least R votes
> ranking that option above the default option are dropped from
I propose the following change. First of all, move clause 3a up
earlier so it can be used in clause 2:
> a. Given two options A and B, V(A,B) is the number of voters
> who prefer option A over option B.
Second, change clause 2 to read as follows:
2. If the ballot has a quorum requirement R, any option A other
than the default option D, where V(A,D) - V(D,A) < R,
is dropped from consideration.
This should eliminate the truly perverse result given above, because B
would *also* be dropped and D would win. This gives a slight bias
towards the default option (which seems to be desired). It is parallel
to the supermajority design. It (hopefully) eliminates the nonsense
results such as the one above.
(I welcome people who can discover similar defects in this rule.)
This isn't really a quorum rule (but then, neither is the one in Manoj's
proposal) -- it's a margin-of-victory rule. That seems to be what
people actually want. :-)
FYI, A true quorum rule might look like this:
2. If the ballot has a quorum requirement R any options other
than the default option which do not receive at least R votes
explicitly ranking that option are dropped from consideration.
This is closer to how quorum normally works (the people who "showed
up" count), and yes, it means that showing up can cause you to lose.
This is why the Democrats in the Texas Legislature staged a walkout to
I don't think this is what you're looking for.