What Shaun is describing is called an "absolute majority," where the 'yes' votes need to be one more than half of the eligible voters.
There is only a single reference that I can find in the FidoNet Policy about needing an absolute majority, and that's the Zone Coordinator election. Other than that, all voting mechanics are extremely vague.
And FWIW, that document has been in effect for thirty years and FidoNet is still here.
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