[EM] Estimates of Winning Probabilities for use in Copeland, Borda, and DSV Approval "done right"

[Forest Simmons]

To clarify the quick & dirty estimates ....

Each voter indicates which alternatives she considers to be viable, in
other words to have more than an infinitesimal chance of actually winning
the election.

If n alternatives are indicated as viable on ballot B, then ballot B
contributes 1/n to the tally for each alternatve indicated. The estimates
of the respective winning probabilities are proportional to these tallies.
So just normalize the talley vector by dividing it by the sum of the raw
tallies.
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