Approval PR is a very simple method:
For M multiwinner seats to be allotted, use the Hagenbach-Bischoff quota ("Droop") of Q = Number of Votes / (M + 1) Voters may approve of as many candidates as they wish. Ballots start with a weight of 1 each. Repeat until M candidates have been seated:
When used as a primary for an M-seat position, I propose winnowing to 2*M + 1 candidates. What are the consequences of using Droop quota and 2*M+1 candidates? For a single winner election, the quota is 25% and 3 primary winners are chosen. If one party commands more than 75% of the vote, they will have 3 candidates in the general election. If a party has less than 75% but more than 50%, they will have 2 candidates in the general. If a party has less than 50% but more than 25%, they will have 1 candidate in the general. For most such single winner elections, this would all but eliminate the single-party runoff problem associated with top-two runoff (of any form). I am aware that there are many potential failures of such a method. Why would one bother using it?
For example, for a state senate with 49 seats (e.g. Washington state), you could have 7 districts of 7 seats each. I would allow as many as 12 seats per district. If subdivision of the region is necessary to stay under 12 seats per district, the districts should be subdivided to no smaller than 6 seats. If you had a district with 11 seats, and more than 23 candidates, you would hold a primary to reduce to 23 candidates. ---- Election-Methods mailing list - see https://electorama.com/em for list info |
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