[EM] renaming DYN

[Forest W Simmons]

Googling DYN shows that these initials are already spoken for (though 
not in the context of voting).

The initials PXSV are not spoken for, so unless someone comes up with a 
better set of letters, I would like to use these letters for "PSX 
Voting".

These letters have the advantage of being very easy to distinguish, 
i.e. very hard to confuse with each other, so that unspoiled ballots 
marked by voters using these marks are machine readable.

S stands for Satisfactory.

X is for crossing out bad candidates.

P stands for Proxy.  The voter makes this mark next to the candidate 
that she would like to have fill in the blanks in her ballot, i.e. to 
decide on S or X for the candidates that she is not sure about.

If the voter puts P next to two names, then those candidates share the 
proxy power equally, i.e. each gets half an approval vote for each of 
the unmarked candidates on the ballot.

Of course, every candidate with a P next to her name is also considered 
satisfactory (approved).

Consider the standard Approval thorn-in-the-side example:

49 C
24 B>A
27 A>B

The first 49 voters mark S next to candidate C, and X next to A and B.

The rest X out C, mark P next to their favorite, and leave their second 
preference unmarked.

Candidates A and B agree on a deal to "trade" 24 votes.

That gives 51 S's for A, and 48 S's for B, with 3 left for A to decide.

A wins.

Forest