For our WA ballot initiatives for Score Voting, we need to decide on a quorum. See this for reference:
I had proposed we just add 100 (or 1000?) zeroes to the denominator. A fixed number.
You could also do something dynamic: add a number of zeroes that’s a function of the number of voters who cast a vote in that race, or the number of total voters, or the number of registered voters, or something like that.
Bear in mind that we’re really only addressing write-ins here. With any candidate whose name appears on the ballot, surely enough zeroes will be cast to prevent the election of any crazy dark horse candidates. But I don’t think the weighting formula should only apply to write-ins, if for the sake of simplicity more than anything else.