[EM] final support

[Forest W Simmons]

So far, the three most promising measures of defeat strength for 
Beatpath and the other immune methods are ...

1. Winning Votes: the number of ballots in favor of the pairwise win.

2. Total Approval: the number of ballots on which the pairwise winner 
is approved.  The Beatpath, Ranked Pairs, and River formulations of DMC 
make use of this measure of "defeat strength."

3. Approval Against: the number of ballots on which the pairwise winner 
is approved but the defeated alternative is not approved.

I suggest that we combine these three measures, and call the resulting 
measure "Final Support," because it is an indication of the 
ratification support that the victor of a pairwise contest would 
receive, given that the defeated alternative is out of the picture.

4. Final Support: the number of ballots on which the victor of a 
pairwise contest is either approved or ranked above the defeated 
alternative (or both).

I suggest that River(fs) would be worth looking into, starting with all 
of the troublesome three candidate scenarios.

FS