Three systems that compromise between certain other voting systems.
- Choose-range-or-IRV. You can either cast a Score Voting ballot or an Instant Runoff Voting ballot. Then the Score Voting ballots are fixed while the IRV ballots are processed normally until one winner remains.
- (STAR+Score)/2. Like STAR but here the Runoff ballots are appended to the regular ballots. So in the Runoff step among A and B, your A=3 B=2 ballot is still there, but there is also an A=5 B=0 ballot derived from your vote.
- Approval IRV. Like IRV but you can give candidates tied rankings like A=B=C>D>E=F. The vote weight of each layer (in this case ABC is layer one, D is layer two, and EF is layer three) is equal to the fraction of candidates in the layer above it that are eliminated, times the weight of that higher layer, so if B was eliminated then D would have 1/3 weight while A and C would still have 1 weight. Oh, and candidates ranked in last place always have a vote weight of zero because you hate those people.
Let me know what you think. I mostly invented these just to invent them. Also note that 2 can be fine tuned to create an uncountable infinity of systems. (The score ballot has weight x, and the Runoff ballot has weight 1-x. Heck, x=-1 or -0.5 looks like an interesting system too…)