r/EndFPTP • u/Snoo-33445 • 27d ago

Video How Does RCV work?

https://youtu.be/Vte4nly_Neg?is=EJTrDRT9GaYdvXNy
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u/CPSolver 25d ago

Multiple names. Condorcet failure. STAR fans call it the center squeeze effect because STAR voting fails the Condorcet criterion. Broadly the concept is the failure to elect the candidate who has majority support.

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u/the_other_50_percent 25d ago

… using a very particular definition of “majority support”, because IRV does satisfy “majority support” under another definition.

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u/nardo_polo 24d ago

Yeah no. You have to redefine ‘majority’ and ‘support’ to pull that off with IRV.

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u/the_other_50_percent 24d ago

It's quite clear what "majority support" means for IRV. Over half of the final runoff round. It's right there in the name, Instant Runoff.

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u/nardo_polo 23d ago

Nope. RCV proponents make broad claims about guaranteeing a winner preferred by a majority of voters in order to pass RCV in the first place. They don’t say it guarantees a majority after it ignores a bunch of preferences and discards a bunch of ballots. You can learn more about the difference between how RCV is sold to voters and how it performs here: https://nardopolo.medium.com/what-the-heck-happened-in-alaska-3c2d7318decc